%%% -*-BibTeX-*-
%%% ====================================================================
%%%  BibTeX-file{
%%%     author          = "Nelson H. F. Beebe",
%%%     version         = "2.65",
%%%     date            = "19 September 2023",
%%%     time            = "11:27:06 MDT",
%%%     filename        = "lowdin-per-olov.bib",
%%%     address         = "University of Utah
%%%                        Department of Mathematics, 110 LCB
%%%                        155 S 1400 E RM 233
%%%                        Salt Lake City, UT 84112-0090
%%%                        USA",
%%%     telephone       = "+1 801 581 5254",
%%%     FAX             = "+1 801 581 4148",
%%%     URL             = "https://www.math.utah.edu/~beebe",
%%%     checksum        = "59977 20818 88318 925863",
%%%     email           = "beebe at math.utah.edu, beebe at acm.org,
%%%                        beebe at computer.org (Internet)",
%%%     codetable       = "ISO/ASCII",
%%%     keywords        = "BibTeX, bibliography, kvantkemi, quantum
%%%                        chemistry",
%%%     license         = "public domain",
%%%     supported       = "yes",
%%%     docstring       = "This is a bibliography of publications of
%%%                        the late Per-Olov Lowdin (28 October 1916 --
%%%                        6 October 2000) (Part 1), and about him and
%%%                        his works (Part 2).
%%%
%%%                        #############################################
%%%                        #############################################
%%%                        ## This bibliography is dedicated in fond  ##
%%%                        ## memory of, and to, Per-Olov Lowdin:     ##
%%%                        ## advisor, alpinist, friend, host,        ##
%%%                        ## leader, linear algebraist, mentor,      ##
%%%                        ## musician, role model, scientist,        ##
%%%                        ## and teacher of a great many of us in    ##
%%%                        ## his extended scientific family.         ##
%%%                        #############################################
%%%                        #############################################
%%%
%%%                        Coverage is expected to be nearly complete
%%%                        for material published in books and journals.
%%%                        However, there are large numbers of Uppsala
%%%                        and Florida technical reports for which
%%%                        BibTeX entries are not yet available.
%%%
%%%                        At version 2.65, the year coverage looked
%%%                        like this:
%%%
%%%                             1939 (   1)    1967 (  15)    1995 (  13)
%%%                             1940 (   0)    1968 (  17)    1996 (   9)
%%%                             1941 (   0)    1969 (  10)    1997 (   9)
%%%                             1942 (   0)    1970 (   8)    1998 (   9)
%%%                             1943 (   0)    1971 (  11)    1999 (   8)
%%%                             1944 (   0)    1972 (  12)    2000 (   5)
%%%                             1945 (   0)    1973 (   9)    2001 (   4)
%%%                             1946 (   0)    1974 (   6)    2002 (  10)
%%%                             1947 (   2)    1975 (  12)    2003 (   3)
%%%                             1948 (   5)    1976 (  57)    2004 (  35)
%%%                             1949 (   1)    1977 (  17)    2005 (   4)
%%%                             1950 (   2)    1978 (  13)    2006 (   3)
%%%                             1951 (   7)    1979 (   5)    2007 (   7)
%%%                             1952 (   1)    1980 (  13)    2008 (   4)
%%%                             1953 (   3)    1981 (  18)    2009 (   5)
%%%                             1954 (   6)    1982 (  19)    2010 (   5)
%%%                             1955 (   8)    1983 (  25)    2011 (   3)
%%%                             1956 (   5)    1984 (  12)    2012 (   8)
%%%                             1957 (   2)    1985 (  17)    2013 (   1)
%%%                             1958 (  13)    1986 (  19)    2014 (   5)
%%%                             1959 (   8)    1987 (  16)    2015 (   1)
%%%                             1960 (   4)    1988 (  20)    2016 (   0)
%%%                             1961 (   2)    1989 (  18)    2017 (   5)
%%%                             1962 (  16)    1990 (  14)    2018 (   2)
%%%                             1963 (  12)    1991 (  23)    2019 (   2)
%%%                             1964 (  14)    1992 (  26)    2020 (   2)
%%%                             1965 (  17)    1993 (  12)
%%%                             1966 (  13)    1994 (  12)
%%%                             19xx (   5)
%%%
%%%                             Article:        461
%%%                             Book:            57
%%%                             InBook:           4
%%%                             InCollection:    90
%%%                             InProceedings:   30
%%%                             Misc:             1
%%%                             PhdThesis:        1
%%%                             Proceedings:     69
%%%                             TechReport:      42
%%%                             Unpublished:     10
%%%
%%%                             Total entries:  765
%%%
%%%                        The necessary diaeresis on the letter ``o''
%%%                        in the family name is omitted in this comment
%%%                        header for technical reasons.  It is properly
%%%                        preserved in all text that can be typeset
%%%                        from the BibTeX entries.  Unlike in German,
%%%                        it is not customary in Swedish to reduce this
%%%                        letter to oe when the diaeresis is
%%%                        unavailable.  Nevertheless, English-language
%%%                        databases often make that reduction.
%%%
%%%                        The two research groups which Per-Olov Lowdin
%%%                        founded, and then led for nearly forty years,
%%%                        have World-Wide Web sites at
%%%
%%%                            http://www.kemi.uu.se/research/theoretical-chemistry/ (Uppsala)
%%%                            http://www.qtp.ufl.edu/  (Gainesville)
%%%
%%%                        Per-Olov Lowdin was the ``propagator'' of a
%%%                        huge number of scientific exchanges, thanks
%%%                        to the Sanibel Conferences (which celebrated
%%%                        their 54th anniversary in February 2014), to the
%%%                        Summer Schools in Sweden and Norway, and to
%%%                        the Winter Schools in Florida.  More than 5000
%%%                        different scientists have participated in these
%%%                        conferences and schools.
%%%
%%%                        His two home institutions, plus the
%%%                        University of Aarhus in Aarhus, Denmark, and
%%%                        the University of Utah, in Salt Lake City,
%%%                        Utah, USA have enjoyed particularly close
%%%                        collaboration.  It was at the latter that
%%%                        this bibliography was developed, using
%%%                        several different data sources; they are
%%%                        credited in bibsource values in the BibTeX
%%%                        entries.
%%%
%%%                        For historical reasons, the Swedish
%%%                        university is spelled `Upsala Universitet',
%%%                        whereas its city is spelled `Uppsala'.
%%%
%%%                        Similarly, in Denmark, the 1948 national
%%%                        orthographic reform changed the letter `aa'
%%%                        at the beginning of the alphabet to `a-ring'
%%%                        at the end (29th letter), but allowed proper
%%%                        names to be spelled either way, at their
%%%                        owners' discretion.  Thus, the university is
%%%                        `Aarhus Universitet', but its city is
%%%                        `[A-ring]rhus'.
%%%
%%%                        English translations are provided for titles
%%%                        of articles written in French (1) and Swedish
%%%                        (10).
%%%
%%%                        Data for this bibliography has been collected
%%%                        from several sources, credited in bibsource
%%%                        values in the BibTeX entries:
%%%
%%%                            Compendex database (1970--1999)
%%%                            IEEE INSPEC database (1968--2000)
%%%                            MathSciNet database (1940--2000)
%%%                            MEDLINE database (1966--2000)
%%%                            OCLC ArticleFirst database (ca. 1990--2000)
%%%                            OCLC WorldCat database (ca. 1990--2000)
%%%                            Science Citation Index database (1980--2000)
%%%                            University of California MELVYL catalog
%%%                            U.S. Library of Congress
%%%                            Web of Science database
%%%                            Zentralblatt Math database (1931--2000)
%%%                            https://www.math.utah.edu/pub/tex/bib/ijqc.bib
%%%                            https://www.math.utah.edu/pub/tex/bib/jmathphys1980.bib
%%%                            https://www.math.utah.edu/pub/tex/bib/master.bib
%%%                            http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html
%%%                            http://www3.interscience.wiley.com/journalfinder.html
%%%                            nhfb-allref.bib (an unreleased bibliography of original papers)
%%%
%%%                        The University of California MELVYL catalog
%%%                        has been particularly helpful for information
%%%                        about books, and for names, and CODEN and
%%%                        ISSN data, of periodicals; the people of the
%%%                        State of California are gratefully
%%%                        acknowledged for making it available on the
%%%                        Internet.
%%%
%%%                        There are far too many errors in these
%%%                        sources, but by merging data from multiple
%%%                        databases, and using majority vote to eliminate
%%%                        discrepancies, many of the errors have been
%%%                        repaired.
%%%
%%%                        Several tedious hours of searching physical
%%%                        journal issues at the University of Utah
%%%                        Marriott Library provided additional data
%%%                        (typically for issue numbers, months, and
%%%                        final page numbers), and corrections.
%%%
%%%                        Despite these extensive efforts, at version
%%%                        0.10 of 16-Dec-2000, 142 entries out of 430
%%%                        still contain errors or missing values, as
%%%                        evidenced by paired queries in string values,
%%%                        or keys beginning with `xx'.
%%%
%%%                        It is regrettably common for bibliographic
%%%                        databases to reduce full names to initials
%%%                        plus family names.  The STRONG preference in
%%%                        this bibliography is to preserve author names
%%%                        EXACTLY as they appeared in the original
%%%                        publication.  It is the job of bibliographic
%%%                        formatting software to later reduce names to
%%%                        initials, if the bibliography style requires
%%%                        it.  The original bibliographic data retains
%%%                        the complete information.
%%%
%%%                        In the chemistry and physics literature, it
%%%                        is common for reference lists in papers to
%%%                        omit article titles, and often, issue
%%%                        numbers, publication months, and final page
%%%                        numbers.  This deplorable practice makes such
%%%                        published bibliographies utterly useless for
%%%                        bibliographic archiving and search, makes it
%%%                        harder for a human to find papers in bound
%%%                        volumes (there are journals that publish more
%%%                        than 20,000 pages annually in a single
%%%                        `volume'), and makes it all but impossible
%%%                        for the reader to relate a bibliography entry
%%%                        to a publication that the reader is familiar
%%%                        with: people remember words, not numbers!
%%%                        This bibliography file strives to provide
%%%                        COMPLETE publication information.
%%%
%%%                        Similarly, it is common for reference lists
%%%                        to abbreviate journal names, sometimes to the
%%%                        point of unintelligibility.  In the days when
%%%                        bibliographies were typed (and retyped) by
%%%                        hand on mechanical typewriters, such
%%%                        practices were perhaps understandable,
%%%                        however much one may deplore the laziness.
%%%
%%%                        With computer representation of publication
%%%                        data in properly, and rigorously, marked-up
%%%                        bibliographic databases, happily, such
%%%                        practices can now be abandoned.
%%%
%%%                        In this BibTeX file, most journal names are
%%%                        given with BibTeX string abbreviations that
%%%                        are defined to expand to FULL journal names.
%%%
%%%                        The journal abbreviation name begins with
%%%                        `j-' (for journal), followed by the uppercase
%%%                        equivalent of a common journal abbreviation,
%%%                        with punctuation eliminated.
%%%
%%%                        Thus, j-ADV-CHEM-PHYS represents the journal
%%%                        ``Advances in Chemical Physics'', abbreviated
%%%                        as ``Adv. Chem. Phys.''.
%%%
%%%                        Notice that a human possessing only the
%%%                        abbreviation might reasonably, but wrongly,
%%%                        guess that it represents ``Advances in
%%%                        Chemistry and Physics'', or ``Adventures in
%%%                        Chemical Physiology''!
%%%
%%%                        Despite popular beliefs of researchers, there
%%%                        are no universal standards for abbreviating
%%%                        journal names: several professional societies
%%%                        and publishers produce such abbreviation
%%%                        lists, but there is widespread disagreement
%%%                        among them.
%%%
%%%                        Where journal values in BibTeX entries remain
%%%                        in this file as quoted strings, rather than
%%%                        as BibTeX string names, sufficient library
%%%                        catalog information has yet to be found to
%%%                        uniquely identify the journal, and obtain its
%%%                        Chemical Abstracts serial publication
%%%                        identifier (the CODEN), and the International
%%%                        Standard Serial Number (the ISSN).  The
%%%                        latter have been assigned since 1972 to
%%%                        virtually all periodicals regularly published
%%%                        throughout the world, and as such, provide a
%%%                        unique periodical identifier for databases
%%%                        and library catalogs.
%%%
%%%                        The checksum field above contains a CRC-16
%%%                        checksum as the first value, followed by the
%%%                        equivalent of the standard UNIX wc (word
%%%                        count) utility output of lines, words, and
%%%                        characters.  This is produced by Robert
%%%                        Solovay's checksum utility.",
%%%  }
%%% ====================================================================

@Preamble{
   "\ifx \undefined \booktitle \def \booktitle#1{{{\em #1}}} \fi" #
   "\ifx \undefined \cdprime \def \cdprime{$''$} \fi" #
   "\ifx \undefined \cprime \def \cprime{$'$} \fi" #
   "\ifx \undefined \url \input{path.sty} \fi"
}

%%% =====================================================================
%%% Acknowledgement abbreviations:

@String{ack-nhfb = "Nelson H. F. Beebe,
                    University of Utah,
                    Department of Mathematics, 110 LCB
                    155 S 1400 E RM 233,
                    Salt Lake City, UT 84112-0090, USA,
                    Tel: +1 801 581 5254,
                    FAX: +1 801 581 4148,
                    e-mail: \path|beebe@math.utah.edu|,
                            \path|beebe@acm.org|,
                            \path|beebe@computer.org| (Internet),
                    URL: \path|https://www.math.utah.edu/~beebe/|"}

%%% =====================================================================
%%% Institution abbreviations:

@String{inst-CSC                = "Center for Scientific Computing,
                                  Department of Mathematics, University of
                                  Utah"}
@String{inst-CSC:adr            = "Salt Lake City, UT 84112, USA"}

@String{inst-KKUU               = "Kvantkemi, Upsala Universitet"}
@String{inst-KKUU:adr           = "Uppsala, Sweden"}

@String{inst-QTP                = "Quantum Theory Project, Departments of
                                  Chemistry and Physics, University of
                                  Florida"}
@String{inst-QTP:adr            = "Gainesville, FL 32611-8435, USA"}

%%% =====================================================================
%%% Journal abbreviations:

@String{j-ABSTR-PAP-AM-CHEM-SOC = "Abstracts of Papers of the American
                                  Chemical Society"}

@String{j-ACTA-PHYS-ACAD-SCI-HUNG = "Acta physica Academiae Scientiarum
                                  Hungaricae"}

@String{j-ACTA-PHYS-POL-A       = "Acta Physica Polonica A"}

@String{j-ACTA-POLYTECH-SCAND-ELECTR-ENG-SER = "Acta Polytechnica
                                  Scandinavica, Electrical Engineering Series"}

@String{j-ADV-CHEM-PHYS         = "Advances in Chemical Physics"}

@String{j-ADV-PHYS              = "Advances in Physics"}

@String{j-ADV-QUANTUM-CHEM      = "Advances in Quantum Chemistry"}

@String{j-AM-SCI                = "American Scientist"}

@String{j-AMER-J-PHYSICS        = "American Journal of Physics"}

@String{j-ANGEW-CHEM            = "Angewandte Chemie"}

@String{j-ANGEW-CHEM-INT-ED     = "Angewandte Chemie, International Edition"}

@String{j-ANGEW-CHEM-INT-ED-ENGL = "Angewandte Chemie, International Edition in
                                  English"}

@String{j-ANN-NY-ACAD-SCI       = "Annals of the New York Academy of Sciences"}

@String{j-ANN-REV-PHYS-CHEM     = "Annual Review of Physical Chemistry"}

@String{j-ANN-SCIENCE           = "Annals of Science"}

@String{j-APPL-MATH-COMP        = "Applied Mathematics and Computation"}

@String{j-ARKIV-FYSIK           = "Arkiv f{\"o}r fysik / utgivet av K. Svenska
                                  Vetenskapsakademien"}

@String{j-ARKIV-MAT-ASTRON-FYSIK = "Arkiv f{\"o}r matematik, astronomi och
                                  fysik, utgivet av K. Svenska
                                  vetenskapsakademien"}

@String{j-BER-BUNSENGES-PHYS-CHEM = "Berichte der Bunsen-Gesellschaft f{\"u}r
                                  Physikalische Chemie, 1963--1990"}

@String{j-BIOCHEM-BIOPHYS-RES-COMMUN = "Biochemical and Biophysical Research
                                  Communications"}

@String{j-BIOPOLYMERS-SYMPOSIA  = "Biopolymers Symposia"}

@String{j-BULL-AMER-PHYS-SOC    = "Bulletin of the American Physical Society"}

@String{j-CHEM-ENG-NEWS         = "Chemical and Engineering News"}

@String{j-CHEM-PHYS-LETT        = "Chemical Physics Letters"}

@String{j-COLLECT-CZECH-CHEM-COMMUN = "Collection of Czechoslovak Chemical
                                  Communications"}

@String{j-COMP-PHYS-COMM        = "Computer Physics Communications"}

@String{j-COMPUT-THEOR-CHEM     = "Computational \& Theoretical Chemistry"}

@String{j-CROAT-CHEM-ACTA       = "Croatica Chemica Acta"}

@String{j-CURR-CONTENTS-PHYS-CHEM-EARTH-SCI = "Current Contents: Physical,
                                  Chemical \& Earth Sciences"}

@String{j-DOKL-AKAD-NAUK        = "Doklady Akademii Nauk SSSR"}

@String{j-ELEMENTA-TMFK         = "Elementa: tidskrift for matematik, fysik
                                  och kemi"}

@String{j-FOUND-CHEM            = "Foundations of Chemistry"}

@String{j-FOUND-PHYS            = "Foundations of Physics"}

@String{j-HIST-STUD-NAT-SCI     = "Historical Studies in the Natural Sciences"}

@String{j-IJQC                  = "International Journal of Quantum Chemistry"}

@String{j-IJQC-BIO-SYMP         = "International Journal of Quantum Chemistry.
                                  Quantum Biology Symposium: Proceedings of
                                  the International Symposium on Quantum
                                  Biology and Quantum Pharmacology."}

@String{j-IJQC-QC-SYMP          = "International Journal of Quantum Chemistry.
                                  Quantum Chemistry Symposium"}

@String{j-IJQC-SYMP             = "International Journal of Quantum Chemistry.
                                  Symposium"}

@String{j-INT-SCI-TECHNOL       = "International Science and Technology"}

@String{j-ISRAEL-J-CHEM         = "Israel Journal of Chemistry"}

@String{j-J-APPL-PHYS           = "Journal of Applied Physics"}

@String{j-J-CHEM-EDUC           = "Journal of Chemical Education"}

@String{j-J-CHEM-PHYS           = "Journal of Chemical Physics"}

@String{j-J-CHEM-SOC-FARADAY-TRANS-2 = "Journal of the Chemical Society ---
                                  Faraday Transactions II"}

@String{j-J-COMPUT-CHEM         = "Journal of Computational Chemistry"}

@String{j-J-ELECTROCHEM-SOC     = "Journal of the Electrochemical Society"}

@String{j-J-MATH-CHEM           = "Journal of Mathematical Chemistry"}

@String{j-J-MATH-PHYS           = "Journal of Mathematical Physics"}

@String{j-J-MOL-SPECTROSC       = "Journal of Molecular Spectroscopy"}

@String{j-J-MOL-STRUCT          = "Journal of Molecular Structure"}

@String{j-J-MOL-STRUCT-THEOCHEM = "Journal of Molecular Structure. Theochem"}

@String{j-J-NONMETALS           = "Journal of Nonmetals"}

@String{j-J-PHYS-A              = "Journal of Physics A (Mathematical and
                                  General)"}

@String{j-J-PHYS-C              = "Journal of Physics C: Solid State Physics"}

@String{j-J-PHYS-CHEM           = "Journal of Physical Chemistry"}

@String{j-J-PHYS-CHEM-SOLIDS    = "Journal of Physics and Chemistry of Solids"}

@String{j-JACS                  = "Journal of the American Chemical Society"}

@String{j-MAGY-FIZ-FOLY         = "Magyar Fizikai Foly{\'o}irat"}

@String{j-MAGN-RESON            = "Journal of Magnetic Resonance"}

@String{j-MOL-PHYS              = "Molecular Physics"}

@String{j-MUTAT-RES             = "Mutation Research"}

@String{j-PHYS-CHEM-CHEM-PHYS   = "Physical Chemistry Chemical Physics: PCCP"}

@String{j-PHYS-CHEM-LIQ         = "Physics and Chemistry of Liquids"}

@String{j-PHYS-LET-A            = "Physics Letters A"}

@String{j-PHYS-REV              = "Physical Review"}

@String{j-PHYS-REV-A            = "Physical Review A (Atomic, Molecular, and
                                  Optical Physics)"}

@String{j-PHYS-REV-2            = "Physical Review, Series 2"}

@String{j-PHYS-STATUS-SOLIDI-B-BASIC-RES = "Physica Status Solidi. B, Basic
                                  Research"}

@String{j-PHYS-TODAY            = "Physics Today"}

@String{j-PHYSICA-SCRIPTA       = "Physica Scripta"}

@String{j-PROC-AMER-PHIL-SOC    = "Proceedings of the {American Philosophical
                                  Society} held at {Philadelphia} for
                                  promoting useful knowledge"}

@String{j-PROC-INDIAN-ACAD-SCI-CHEM-SCI = "Proceedings of the Indian Academy
                                  of Sciences. Chemical sciences."}

@String{j-PROC-NATL-ACAD-SCI-USA = "Proceedings of the National Academy of
                                  Sciences of the United States of America"}

@String{j-PURE-APPL-CHEM        = "Pure and Applied Chemistry"}

@String{j-Q-REV-BIOL            = "Quarterly review of biology"}

@String{j-QUART-APPL-MATH       = "Quarterly of Applied Mathematics"}

@String{j-REV-MOD-PHYS          = "Reviews of Modern Physics"}

@String{j-SIG-PROC              = "Signal Processing"}

@String{j-SVENSK-KEMISK-TIDSKRIFT = "Svensk kemisk tidskrift"}

@String{j-SVENSK-NATURVETENSKAP = "Svensk naturvetenskap"}

@String{j-TEX-J-SCI             = "Texas Journal of Science"}

@String{j-THEOR-CHEM-ACCOUNTS   = "Theoretical Chemistry Accounts"}

@String{j-THEOR-CHIM-ACTA       = "Theoretica Chimica Acta"}

@String{j-Z-PHYS-CHEM-LEIPZIG   = "Zeitschrift f{\"u}r physikalische Chemie
                                  (Leipzig)"}

%%% =====================================================================
%%% Publisher abbreviations:

@String{pub-ACADEMIC            = "Academic Press Inc."}
@String{pub-ACADEMIC:adr        = "New York, USA"}

@String{pub-ADENINE-PRESS       = "Adenine Press"}
@String{pub-ADENINE-PRESS:adr   = "Guilderland, NY, USA"}

@String{pub-AIP                 = "American Institute of Physics"}
@String{pub-AIP:adr             = "Woodbury, NY, USA"}

@String{pub-ALMQVIST-WIKSELLS   = "Almqvist and Wiksell"}
@String{pub-ALMQVIST-WIKSELLS:adr = "Uppsala, Sweden"}

@String{pub-AW                  = "Ad{\-d}i{\-s}on-Wes{\-l}ey"}
@String{pub-AW:adr              = "Reading, MA, USA"}

@String{pub-ELSEVIER            = "Elsevier"}
@String{pub-ELSEVIER:adr        = "Amsterdam, The Netherlands"}

@String{pub-IBM                 = "IBM Corporation"}
@String{pub-IBM:adr             = "San Jose, CA, USA"}

@String{pub-INTERSCIENCE        = "Interscience Publishers"}
@String{pub-INTERSCIENCE:adr    = "New York, NY, USA"}

@String{pub-KLUWER              = "Kluwer Academic Publishers Group"}
@String{pub-KLUWER:adr          = "Norwell, MA, USA, and Dordrecht,
                                  The Netherlands"}

@String{pub-MIT                 = "MIT Press"}
@String{pub-MIT:adr             = "Cambridge, MA, USA"}

@String{pub-PLENUM              = "Plenum Press"}
@String{pub-PLENUM:adr          = "New York, NY, USA; London, UK"}

@String{pub-REIDEL              = "D. Reidel"}
@String{pub-REIDEL:adr          = "Dordrecht, Boston, Lancaster, Tokyo"}

@String{pub-SV                  = "Spring{\-}er-Ver{\-}lag"}
@String{pub-SV:adr              = "Berlin, Germany~/ Heidelberg,
                                  Germany~/ London, UK~/ etc."}

@String{pub-U-CALIFORNIA-PRESS  = "University of California Press"}
@String{pub-U-CALIFORNIA-PRESS:adr = "Berkeley, CA, USA"}

@String{pub-WILEY               = "John Wiley and Sons, Inc."}
@String{pub-WILEY:adr           = "New York, NY, USA"}

@String{pub-WORLD-SCI           = "World Scientific Publishing Co."}
@String{pub-WORLD-SCI:adr       = "Singapore; Philadelphia, PA, USA; River
                                    Edge, NJ, USA"}

%%% =====================================================================
%%% Series abbreviations:

@String{ser-IJQC                = "International journal of quantum chemistry"}

@String{ser-IJQC-QBS            = "International journal of quantum chemistry.
                                  Quantum biology symposium"}

@String{ser-IJQC-QCS            = "International journal of quantum chemistry.
                                  Quantum chemistry symposium"}

@String{ser-IJQC-SYMP           = "International journal of quantum chemistry.
                                  Symposium"}

%%% =====================================================================
%%%        Part 1 (of 2): publications by Per-Olov L{\"o}wdin
%%%
%%% Entries are sorted by year, then by citation label:

@Article{Lowdin:1939:LTO,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{Lorentz}-Transformationen och den Kinematiska
                 Relativitetsprincipen. ({Swedish}) [{The Lorentz}
                 Transformation and the Kinematic Relativity
                 Principle]",
  journal =      j-ELEMENTA-TMFK,
  volume =       "22",
  number =       "??",
  pages =        "161--169",
  year =         "1939",
  CODEN =        "EMNTAE",
  ISSN =         "0013-5933",
  bibdate =      "Fri Nov 17 08:02:05 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Elementa: tidskrift for matematik, fysik och kemi",
  language =     "Swedish",
}

@TechReport{Lowdin:1947:CRC,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Contributions to the Report from the Conference of the
                 {Swedish National Committee for Physics}",
  type =         "Technical report",
  institution =  "????",
  address =      "????",
  year =         "1947",
  bibdate =      "Fri Nov 17 08:10:08 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1947:QMC,
  author =       "P.-O. L{\"o}wdin",
  title =        "A Quantum Mechanical Calculation of the Cohesive
                 Energy, the Interionic Distance, and the Elastic
                 Constants of Some Ionic Crystals",
  journal =      j-ARKIV-MAT-ASTRON-FYSIK,
  volume =       "35A",
  number =       "??",
  pages =        "1--10",
  year =         "1947",
  CODEN =        "AMAFAX",
  ISSN =         "0365-4133",
  bibdate =      "Fri Dec 15 17:40:52 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  note =         "This paper introduces L{\"o}wdin's ``canonical
                 orthonormalization'' scheme. See \cite{Lowdin:1956:QTC}
                 for his ``symmetric orthonormalization''.",
  acknowledgement = ack-nhfb,
  fjournal =     "Arkiv f{\"o}r matematik, astronomi och fysik, utgivet
                 av K. Svenska vetenskapsakademien",
  journalabr =   "Arkiv Mat. Astron. Fysik",
  xxnote =       "Check this: not in
                 http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html
                 for this volume/year/pages?? The volume is out-of-range
                 for this journal. This entry may be equivalent to
                 \cite{Lowdin:1948:QMCa,Lowdin:1948:QMCb}.",
  xxvolume =     "251",
}

@TechReport{Lowdin:1948:CRC,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Contributions to the Report from the Conference of the
                 {Swedish National Committee for Physics}",
  type =         "Technical report",
  institution =  "????",
  address =      "????",
  year =         "1948",
  bibdate =      "Fri Nov 17 08:10:08 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1948:QMCa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "A quantum mechanical calculation of the cohesive
                 energy, the interionic distance, and the elastic
                 constants of some ionic crystals. {I}",
  journal =      j-ARKIV-MAT-ASTRON-FYSIK,
  volume =       "35A",
  number =       "9",
  pages =        "1--10",
  year =         "1948",
  CODEN =        "AMAFAX",
  ISSN =         "0365-4133",
  bibdate =      "Fri Dec 15 17:40:57 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Zentralblatt Math database",
  ZMnumber =     "030.09501",
  acknowledgement = ack-nhfb,
  fjournal =     "Arkiv f{\"o}r matematik, astronomi och fysik, utgivet
                 av K. Svenska vetenskapsakademien",
  keywords =     "Structure of matter",
  source =       "Ark. Mat. Astron. Fys. A 35, No.9, 10 p. (1948).",
}

@Article{Lowdin:1948:QMCb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "A quantum mechanical calculation of the cohesive
                 energy, the interionic distance, and the elastic
                 constants of some ionic crystals. {II}. {The} Elastic
                 Constants $ c_{12} $ and $ c_{44} $",
  journal =      j-ARKIV-MAT-ASTRON-FYSIK,
  volume =       "35A",
  number =       "30",
  pages =        "1--18",
  year =         "1948",
  CODEN =        "AMAFAX",
  ISSN =         "0365-4133",
  bibdate =      "Fri Nov 17 07:07:31 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  ZMnumber =     "030.09501",
  acknowledgement = ack-nhfb,
  fjournal =     "Arkiv f{\"o}r matematik, astronomi och fysik, utgivet
                 av K. Svenska vetenskapsakademien",
}

@PhdThesis{Lowdin:1948:TISa,
  author =       "P.-O. L{\"o}wdin",
  title =        "A Theoretical Investigation Into Some Properties of
                 Ionic Crystals",
  type =         "Dissertation",
  school =       "Institute of Mechanics and Theoretical Physics, Upsala
                 Universitet",
  address =      "Uppsala, Sweden",
  pages =        "126",
  day =          "1",
  month =        may,
  year =         "1948",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  advisor =      "Ivar Waller",
}

@Book{Lowdin:1948:TISb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "A theoretical investigation into some properties of
                 ionic crystals: a quantum mechanical treatment of the
                 cohesive energy, the interionic distance, the elastic
                 constants, and the compression at high pressures, with
                 numerical applications to some alkali halides",
  publisher =    pub-ALMQVIST-WIKSELLS,
  address =      pub-ALMQVIST-WIKSELLS:adr,
  pages =        "xi + 126 + 1",
  year =         "1948",
  LCCN =         "QB 498 349 (??)",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  acknowledgement = ack-nhfb,
  keywords =     "crystallography, mathematical",
  remark =       "Extra t.p. with thesis statement inserted. Addendum
                 and errata on leaf inserted. Inaug. diss.--Uppsala.",
}

@TechReport{Lowdin:1949:CRC,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Contributions to the Report from the Conference of the
                 {Swedish National Committee for Physics}",
  type =         "Technical report",
  institution =  "????",
  address =      "????",
  year =         "1949",
  bibdate =      "Fri Nov 17 08:10:08 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1950:NMS,
  author =       "Per-Olov L{\"o}wdin",
  title =        "A note on the method of steepest descents with a
                 remark on {T. Ljunggren}'s paper {``Contributions to
                 the theory of diffraction of electromagnetic waves by
                 spherical particles.''}",
  journal =      j-ARKIV-FYSIK,
  volume =       "2",
  number =       "36",
  pages =        "367--370",
  year =         "1950",
  CODEN =        "AFYSA7",
  ISSN =         "0365-2440",
  MRclass =      "78.0X",
  MRnumber =     "12,884e",
  MRreviewer =   "C. J. Bouwkamp",
  bibdate =      "Thu Nov 16 11:51:44 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; Zentralblatt Math database",
  ZMnumber =     "040.27602",
  acknowledgement = ack-nhfb,
  fjournal =     "Arkiv f{\"o}r fysik",
  journal-URL =  "http://www.speciation.net/Database/Journals/Arkiv-foer-Fysik-;i771",
  journalabr =   "Ark. Fys.",
  keywords =     "{optics}",
}

@Article{Lowdin:1950:NOP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Non-Orthogonality problem Connected with the
                 Use of Atomic Wave Functions in the Theory of Molecules
                 and Crystals",
  journal =      j-J-CHEM-PHYS,
  volume =       "18",
  number =       "3",
  pages =        "365--375",
  month =        mar,
  year =         "1950",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1747632",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Fri Dec 15 18:32:38 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://jcp.aip.org/resource/1/jcpsa6/v18/i3/p365_s1",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Lowdin:1951:LEC,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Letter to the Editor: Calculation of Electric Dipole
                 Moments of Some Heterocyclics",
  journal =      j-J-CHEM-PHYS,
  volume =       "19",
  number =       "10",
  pages =        "1323--1324",
  month =        oct,
  year =         "1951",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1748043",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Fri Dec 15 18:33:12 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://jcp.aip.org/resource/1/jcpsa6/v19/i10/p1323_s1",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@TechReport{Lowdin:1951:MNI,
  author =       "P.-O. L{\"o}wdin",
  title =        "On the Methods of Numerical Integration Used in
                 Determining Self-Consistent Fields",
  type =         "Shelter Island Conference, NAS-ONR Report",
  institution =  "Office of Naval Research",
  address =      "Washington, DC, USA (??)",
  pages =        "187--194",
  year =         "1951",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1951:NNC,
  author =       "Per-Olov L{\"o}wdin and Alf Sj{\"o}lander",
  title =        "A note on the numerical calculation of asymptotic
                 phases with a numerical study of {Hulth{\'e}n}'s
                 variational principle",
  journal =      j-ARKIV-FYSIK,
  volume =       "3",
  number =       "11",
  pages =        "155--166",
  year =         "1951",
  CODEN =        "AFYSA7",
  ISSN =         "0365-2440",
  MRclass =      "65.0X",
  MRnumber =     "13,388i",
  MRreviewer =   "H. O. Hartley",
  bibdate =      "Thu Nov 16 11:51:44 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; Zentralblatt Math database",
  ZMnumber =     "042.45303",
  acknowledgement = ack-nhfb,
  fjournal =     "Arkiv f{\"o}r fysik",
  journal-URL =  "http://www.speciation.net/Database/Journals/Arkiv-foer-Fysik-;i771",
  journalabr =   "Ark. Fys.",
  keywords =     "quantum theory",
}

@Article{Lowdin:1951:NQM,
  author =       "Per-Olov L{\"o}wdin",
  title =        "A note on the quantum-mechanical perturbation theory",
  journal =      j-J-CHEM-PHYS,
  volume =       "19",
  number =       "11",
  pages =        "1396--1401",
  month =        nov,
  year =         "1951",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1748067",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  MRclass =      "81.0X",
  MRnumber =     "13,892e",
  MRreviewer =   "E. Gora",
  bibdate =      "Fri Dec 15 18:33:22 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database",
  URL =          "http://jcp.aip.org/resource/1/jcpsa6/v19/i11/p1396_s1",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Lowdin:1951:QMCa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Quantum-Mechanical Calculation of the Cohesive
                 Energy of Molecules and Crystals. {Part I}. {A} General
                 Energy Formula for the Ground State",
  journal =      j-J-CHEM-PHYS,
  volume =       "19",
  number =       "12",
  pages =        "1570--1578",
  month =        dec,
  year =         "1951",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1748125",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Fri Dec 15 18:33:37 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://jcp.aip.org/resource/1/jcpsa6/v19/i12/p1570_s1",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Lowdin:1951:QMCb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Quantum-Mechanical Calculation of the Cohesive
                 Energy of Molecules and Crystals. {Part II}.
                 {Treatment} of the Alkali metals with Numerical
                 Applications to Sodium",
  journal =      j-J-CHEM-PHYS,
  volume =       "19",
  number =       "12",
  pages =        "1579--1591",
  month =        dec,
  year =         "1951",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1748126",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Fri Dec 15 18:33:54 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://jcp.aip.org/resource/1/jcpsa6/v19/i12/p1579_s1",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Lundqvist:1951:CCI,
  author =       "Stig O. Lundqvist and Per-Olov L{\"o}wdin",
  title =        "On the calculation of certain integrals occurring in
                 the theory of molecules, especially three-centre and
                 four-centre integrals",
  journal =      j-ARKIV-FYSIK,
  volume =       "3",
  number =       "10",
  pages =        "147--154",
  year =         "1951",
  CODEN =        "AFYSA7",
  ISSN =         "0365-2440",
  MRclass =      "33.0X",
  MRnumber =     "13,130b",
  MRreviewer =   "A. Erd{\'e}lyi",
  bibdate =      "Thu Nov 16 11:51:44 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; Zentralblatt Math database",
  ZMnumber =     "043.22502",
  acknowledgement = ack-nhfb,
  fjournal =     "Arkiv f{\"o}r fysik",
  journal-URL =  "http://www.speciation.net/Database/Journals/Arkiv-foer-Fysik-;i771",
  journalabr =   "Ark. Fys.",
  keywords =     "structure of matter",
}

@Article{Lowdin:1952:NIO,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the numerical integration of ordinary differential
                 equations of the first order",
  journal =      j-QUART-APPL-MATH,
  volume =       "10",
  number =       "2",
  pages =        "97--111",
  month =        jul,
  year =         "1952",
  CODEN =        "QAMAAY",
  ISSN =         "0033-569x (print), 1552-4485 (electronic)",
  ISSN-L =       "0033-569X",
  MRclass =      "65.0X",
  MRnumber =     "14,413d",
  MRreviewer =   "W. E. Milne",
  bibdate =      "Fri Dec 15 19:28:33 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; Zentralblatt Math database",
  ZMnumber =     "046.13402",
  acknowledgement = ack-nhfb,
  fjournal =     "Quarterly of Applied Mathematics",
  journal-URL =  "http://dl.acm.org/citation.cfm?id=J641;
                 http://www.ams.org/journals/qam",
  keywords =     "numerical analysis",
}

@Article{Lowdin:1953:LEA,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Letter to the Editor: Approximate formulas for
                 many-center integrals in the theory of molecules and
                 crystals",
  journal =      j-J-CHEM-PHYS,
  volume =       "21",
  number =       "2",
  pages =        "374--375",
  month =        feb,
  year =         "1953",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1698901",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  MRclass =      "65.0X",
  MRnumber =     "14,693b",
  bibdate =      "Fri Dec 15 18:34:28 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database",
  URL =          "http://jcp.aip.org/resource/1/jcpsa6/v21/i2/p374_s1",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Lowdin:1953:MOT,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Molecular-Orbital Theory of Conjugated Organic
                 Compounds with Application to the Perturbed Benzene
                 Ring",
  journal =      j-J-CHEM-PHYS,
  volume =       "21",
  number =       "3",
  pages =        "496--515",
  month =        mar,
  year =         "1953",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1698934",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Fri Dec 15 18:34:36 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://jcp.aip.org/resource/1/jcpsa6/v21/i3/p496_s1",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Lowdin:1953:SAS,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Studies of atomic self-consistent fields. {I}.
                 {Calculation} of {Slater} functions",
  journal =      j-PHYS-REV,
  volume =       "90",
  number =       "1",
  pages =        "120--125",
  day =          "1",
  month =        apr,
  year =         "1953",
  CODEN =        "PHRVAO",
  DOI =          "https://doi.org/10.1103/PhysRev.90.120",
  ISSN =         "0031-899X (print), 1536-6065 (electronic)",
  ISSN-L =       "0031-899X",
  bibdate =      "Tue Dec 26 12:44:35 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Zentralblatt Math database",
  URL =          "http://prola.aps.org/abstract/PR/v90/i1/p120_1",
  ZMnumber =     "050.23206",
  acknowledgement = ack-nhfb,
  fjournal =     "Physical Review",
  journal-URL =  "http://prola.aps.org/browse/PR",
  keywords =     "Structure of matter",
}

@InProceedings{Lowdin:1954:CMI,
  author =       "Per-Olov L{\"o}wdin",
  booktitle =    "Symposium on Molecular Physics at Nikko, Japan in
                 1953",
  title =        "Calculations of Molecular Integrals in {Uppsala}",
  publisher =    "Maruzen",
  address =      "Tokyo, Japan",
  pages =        "113--117",
  year =         "1954",
  LCCN =         "????",
  bibdate =      "Tue Dec 26 12:38:38 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InProceedings{Lowdin:1954:MAM,
  author =       "Per-Olov L{\"o}wdin",
  booktitle =    "Symposium on Molecular Physics at Nikko, Japan in
                 1953",
  title =        "A Method of Alternant Molecular Orbitals",
  publisher =    "????",
  address =      "????",
  pages =        "13--16",
  year =         "1954",
  LCCN =         "????",
  bibdate =      "Fri Nov 17 08:23:48 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1954:NEE,
  author =       "Per-Olov L{\"o}wdin and H. Sponer",
  title =        "Les Niveaux d'Energie Electronique dans l'Ethylene",
  journal =      "Le Journal de physique et le radium. Series 8",
  volume =       "15",
  number =       "??",
  pages =        "607--611",
  year =         "1954",
  bibdate =      "Fri Dec 15 19:38:29 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  journalabr =   "J. Phys. Radium",
  xxCODEN =      "none",
  xxISSN =       "none",
  xxnote =       "Check author order??",
}

@InProceedings{Lowdin:1954:RSM,
  author =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Conference of
                 Theoretical Physics in Japan",
  title =        "Recent Simplifications in the Molecular Orbital Theory
                 of Calculating Energy Levels",
  publisher =    "????",
  address =      "????",
  pages =        "599--611",
  month =        sep,
  year =         "1954",
  bibdate =      "Fri Nov 17 08:22:37 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1954:SAS,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Studies of atomic self-consistent fields. {II}.
                 {Interpolation} problems",
  journal =      j-PHYS-REV,
  volume =       "94",
  number =       "6",
  pages =        "1600--1609",
  day =          "15",
  month =        jun,
  year =         "1954",
  CODEN =        "PHRVAO",
  DOI =          "https://doi.org/10.1103/PhysRev.94.1600",
  ISSN =         "0031-899X (print), 1536-6065 (electronic)",
  ISSN-L =       "0031-899X",
  bibdate =      "Tue Dec 26 12:44:39 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Zentralblatt Math database",
  URL =          "http://prola.aps.org/abstract/PR/v94/i6/p1600_1",
  ZMnumber =     "056.23003",
  acknowledgement = ack-nhfb,
  fjournal =     "Physical Review",
  journal-URL =  "http://prola.aps.org/browse/PR",
  keywords =     "Structure of matter",
}

@TechReport{Lowdin:1954:U,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Studies of atomic self-consistent fields. {II}.
                 {Interpolation} Problems",
  type =         "Quarterly Report",
  number =       "4",
  institution =  "Solid-State and Molecular Theory Group, MIT",
  address =      "Cambridge, MA, USA",
  pages =        "1--??",
  month =        "????",
  year =         "1954",
  bibdate =      "Tue Dec 26 12:08:43 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Published in \cite{Lowdin:1953:SAS,Lowdin:1954:SAS}.",
  acknowledgement = ack-nhfb,
  remark =       "This could be either Part I or Part II.",
  xxnote =       "What was the title of this report?? Cited in
                 Theoretica Chimica Acta {\bf 103}(3--4) 238--241
                 (2000).",
}

@Article{Fischer-Hjalmars:1955:RSQ,
  author =       "Inga Fischer-Hjalmars and Per-Olov L{\"o}wdin",
  title =        "Report from the Symposium on Quantum Theory of
                 Molecules: {Stockholm and Uppsala, March 21--25,
                 1955}",
  journal =      j-SVENSK-KEMISK-TIDSKRIFT,
  volume =       "67",
  number =       "8",
  pages =        "365--398",
  year =         "1955",
  CODEN =        "SKTIAF",
  ISSN =         "0371-0742",
  ISSN-L =       "0371-0742",
  bibdate =      "Mon Jun 12 07:59:09 2017",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Svensk kemisk tidskrift",
  xxpages =      "361--??",
}

@InProceedings{Lowdin:1955:EHF,
  author =       "Per-Olov L{\"o}wdin",
  booktitle =    "Les Electrons dans les M{\'e}taux. Dixi{\`e}me
                 Conference Solvay, Bruxelles 1954",
  title =        "An Extension of the {Hartree--Fock} Method to Include
                 Correlation Effects",
  publisher =    "????",
  address =      "????",
  pages =        "71--88",
  year =         "1955",
  LCCN =         "????",
  bibdate =      "Fri Nov 17 08:25:54 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1955:LEN,
  author =       "Per-Olov L{\"o}wdin and H. Shull",
  title =        "Letter to the Editor: Natural Spin-Orbitals for
                 Helium",
  journal =      j-J-CHEM-PHYS,
  volume =       "23",
  number =       "8",
  pages =        "1565--1565",
  month =        aug,
  year =         "1955",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1742383",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Fri Dec 15 18:36:03 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://jcp.aip.org/resource/1/jcpsa6/v23/i8/p1565_s1",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Lowdin:1955:QTMa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Quantum theory of many-particle systems. {I}.
                 {Physical} interpretations by means of density
                 matrices, natural spin-orbitals, and convergence
                 problems in the method of configurational interaction",
  journal =      j-PHYS-REV,
  volume =       "97",
  number =       "6",
  pages =        "1474--1489",
  day =          "15",
  month =        mar,
  year =         "1955",
  CODEN =        "PHRVAO",
  DOI =          "https://doi.org/10.1103/PhysRev.97.1474",
  ISSN =         "0031-899X (print), 1536-6065 (electronic)",
  ISSN-L =       "0031-899X",
  MRclass =      "81.0X",
  MRnumber =     "16,983e",
  MRreviewer =   "L. Van Hove",
  bibdate =      "Tue Dec 26 12:07:48 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; nhfb-allref.bib; Zentralblatt Math
                 database",
  URL =          "http://prola.aps.org/abstract/PR/v97/i6/p1490_1",
  ZMnumber =     "065.44907",
  acknowledgement = ack-nhfb,
  fjournal =     "Physical Review",
  journal-URL =  "http://prola.aps.org/browse/PR",
  keywords =     "natural spin-orbitals (NSO); structure of matter",
  remark =       "See historical perspective \cite{Roos:2000:PQT}.",
}

@Article{Lowdin:1955:QTMb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Quantum theory of many-particle systems. {II}. {Study}
                 of the ordinary {Hartree--Fock} approximation",
  journal =      j-PHYS-REV,
  volume =       "97",
  number =       "6",
  pages =        "1490--1508",
  day =          "15",
  month =        mar,
  year =         "1955",
  CODEN =        "PHRVAO",
  DOI =          "https://doi.org/10.1103/PhysRev.97.1490",
  ISSN =         "0031-899X (print), 1536-6065 (electronic)",
  ISSN-L =       "0031-899X",
  MRclass =      "81.0X",
  MRnumber =     "16,983f",
  MRreviewer =   "L. Van Hove",
  bibdate =      "Tue Dec 26 12:07:47 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; nhfb-allref.bib; Zentralblatt Math
                 database",
  URL =          "http://prola.aps.org/abstract/PR/v97/i6/p1490_1",
  ZMnumber =     "065.44907",
  acknowledgement = ack-nhfb,
  fjournal =     "Physical Review",
  journal-URL =  "http://prola.aps.org/browse/PR",
  keywords =     "structure of matter",
  remark =       "See historical perspective \cite{Roos:2000:PQT}.",
}

@Article{Lowdin:1955:QTMc,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Quantum theory of many-particle systems. {III}.
                 {Extension} of the {Hartree--Fock} scheme to include
                 degenerate systems and correlation effects",
  journal =      j-PHYS-REV,
  volume =       "97",
  number =       "6",
  pages =        "1509--1520",
  day =          "15",
  month =        mar,
  year =         "1955",
  CODEN =        "PHRVAO",
  DOI =          "https://doi.org/10.1103/PhysRev.97.1509",
  ISSN =         "0031-899X (print), 1536-6065 (electronic)",
  ISSN-L =       "0031-899X",
  MRclass =      "81.0X",
  MRnumber =     "16,983g",
  MRreviewer =   "L. Van Hove",
  bibdate =      "Tue Dec 26 12:07:45 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; nhfb-allref.bib; Zentralblatt Math
                 database",
  URL =          "http://prola.aps.org/abstract/PR/v97/i6/p1509_1",
  ZMnumber =     "065.44907",
  acknowledgement = ack-nhfb,
  fjournal =     "Physical Review",
  journal-URL =  "http://prola.aps.org/browse/PR",
  keywords =     "structure of matter",
  remark =       "See historical perspective \cite{Roos:2000:PQT}.",
}

@Article{Lowdin:1955:RSQ,
  author =       "Per-Olov L{\"o}wdin and I. Fischer-Hjalmars",
  title =        "Report from the {Symposium on Quantum Theory of
                 Molecules, Stockholm and Uppsala, 1955}",
  journal =      j-SVENSK-KEMISK-TIDSKRIFT,
  volume =       "67",
  number =       "??",
  pages =        "365--398",
  year =         "1955",
  CODEN =        "KETIAL",
  ISSN =         "0039-6605",
  bibdate =      "Fri Nov 17 08:26:49 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "See especially pp. 369, 370, 373, 375, 379, 380 and
                 383.",
  acknowledgement = ack-nhfb,
  fjournal =     "Svensk kemisk tidskrift",
  journalabr =   "Sv. Kem. Tidskrift",
  xxnote =       "Check author order??",
}

@Article{Shull:1955:LER,
  author =       "Harrison Shull and Per-Olov L{\"o}wdin",
  title =        "Letter to the Editor: Role of the Continuum in
                 Superposition of Configurations",
  journal =      j-J-CHEM-PHYS,
  volume =       "23",
  number =       "7",
  pages =        "1362--1362",
  month =        jul,
  year =         "1955",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1742296",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Mon Dec 18 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://jcp.aip.org/resource/1/jcpsa6/v23/i7/p1362_s1",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Lowdin:1956:ECT,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Electronic Correlation in the Theory of Molecular
                 Energy Levels",
  journal =      j-TEX-J-SCI,
  volume =       "8",
  pages =        "163--??",
  year =         "1956",
  CODEN =        "TJSCAU",
  ISSN =         "0040-4403",
  bibdate =      "Tue Dec 05 09:11:08 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Proceedings of the Molecular Quantum Mechanics
                 Conference, December 7--9, 1955, Texas, p. 30.",
  acknowledgement = ack-nhfb,
  fjournal =     "Texas Journal of Science",
}

@Article{Lowdin:1956:NOQ,
  author =       "Per-Olov L{\"o}wdin and Harrison Shull",
  title =        "Natural Orbitals in the Quantum Theory of Two-Electron
                 Systems",
  journal =      j-PHYS-REV,
  volume =       "101",
  number =       "6",
  pages =        "1730--1739",
  day =          "15",
  month =        mar,
  year =         "1956",
  CODEN =        "PHRVAO",
  DOI =          "https://doi.org/10.1103/PhysRev.101.1730",
  ISSN =         "0031-899X (print), 1536-6065 (electronic)",
  ISSN-L =       "0031-899X",
  bibdate =      "Fri Dec 15 19:18:24 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib; Zentralblatt Math database",
  URL =          "http://prola.aps.org/abstract/PR/v101/i6/p1730_1",
  ZMnumber =     "070.23502",
  acknowledgement = ack-nhfb,
  fjournal =     "Physical Review",
  journal-URL =  "http://prola.aps.org/browse/PR",
  keywords =     "density matrix; NSO; structure of matter",
}

@Article{Lowdin:1956:QTC,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Quantum theory of cohesive properties of solids",
  journal =      j-ADV-PHYS,
  volume =       "5",
  number =       "17",
  pages =        "1--172",
  month =        jan,
  year =         "1956",
  CODEN =        "ADPHAH",
  DOI =          "https://doi.org/10.1080/00018735600101155",
  ISSN =         "0001-8732 (print), 1460-6976 (electronic)",
  ISSN-L =       "0001-8732",
  MRclass =      "81.0X",
  MRnumber =     "17,1035d",
  MRreviewer =   "C. Herring",
  bibdate =      "Mon Dec 18 10:30:37 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; Zentralblatt Math database",
  note =         "This paper introduces L{\"o}wdin's ``symmetric
                 orthonormalization'' scheme. See \cite{Lowdin:1947:QMC}
                 for his ``canonical orthonormalization''.",
  ZMnumber =     "073.23803",
  acknowledgement = ack-nhfb,
  fjournal =     "Advances in physics",
  journal-URL =  "http://www.tandfonline.com/loi/tadp20",
  keywords =     "rigid bodies",
  ZMreviewer =   "G. Hoehler",
}

@Article{Lowdin:1956:SSC,
  author =       "Per-Olov L{\"o}wdin and K. Appel",
  title =        "Studies of Self-Consistent Fields. {III}. Analytic
                 Wave Functions for the Argon-Like Ions and for the
                 First Row of the Transition Metals",
  journal =      j-PHYS-REV,
  volume =       "103",
  number =       "6",
  pages =        "1746--1755",
  day =          "15",
  month =        sep,
  year =         "1956",
  CODEN =        "PHRVAO",
  DOI =          "https://doi.org/10.1103/PhysRev.103.1746",
  ISSN =         "0031-899X (print), 1536-6065 (electronic)",
  ISSN-L =       "0031-899X",
  bibdate =      "Mon Dec 18 10:58:46 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://prola.aps.org/abstract/PR/v103/i6/p1746_1",
  acknowledgement = ack-nhfb,
  fjournal =     "Physical Review",
  journal-URL =  "http://prola.aps.org/browse/PR",
}

@Article{Shull:1956:CSH,
  author =       "Harrison Shull and Per-Olov L{\"o}wdin",
  title =        "Correlation Splitting in Helium-Like Ions",
  journal =      j-J-CHEM-PHYS,
  volume =       "25",
  number =       "5",
  pages =        "1035--1040",
  month =        nov,
  year =         "1956",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1743093",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Mon Dec 18 10:56:37 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  URL =          "http://jcp.aip.org/resource/1/jcpsa6/v25/i5/p1035_s1",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@TechReport{Fieschi:1957:ASW,
  author =       "R. Fieschi and P.-O. L{\"o}wdin",
  title =        "Atomic State Wavefunctions Generated by Projection
                 Operators",
  type =         "Technical Report",
  number =       "TU-4",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  pages =        "??",
  year =         "1957",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1957:PSQ,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Present Situation of Quantum Chemistry",
  journal =      j-J-PHYS-CHEM,
  volume =       "61",
  number =       "1",
  pages =        "55--68",
  day =          "30",
  month =        jan,
  year =         "1957",
  CODEN =        "JPCHAX",
  DOI =          "https://doi.org/10.1021/j150547a012",
  ISSN =         "0022-3654 (print), 1541-5740 (electronic)",
  ISSN-L =       "0022-3654",
  bibdate =      "Mon Dec 18 10:46:10 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "J. Phys. Chem.",
  journal-URL =  "http://pubs.acs.org/journal/jpchax",
}

@Article{Freeman:1958:QMK,
  author =       "A. J. Freeman and Per-Olov L{\"o}wdin",
  title =        "Quantum Mechanical Kinetic Energy Transformation",
  journal =      j-PHYS-REV,
  volume =       "111",
  number =       "5",
  pages =        "1212--1213",
  day =          "1",
  month =        sep,
  year =         "1958",
  CODEN =        "PHRVAO",
  DOI =          "https://doi.org/10.1103/PhysRev.111.1212",
  ISSN =         "0031-899X (print), 1536-6065 (electronic)",
  ISSN-L =       "0031-899X",
  bibdate =      "Mon Dec 18 10:59:11 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://prola.aps.org/abstract/PR/v111/i5/p1212_1",
  abstract =     "It is shown that by a transformation of the usual
                 expression for the kinetic energy matrix elements a
                 simpler formula results which yields, for numerical
                 wave functions, higher numerical accuracy for the
                 kinetic energy than has previously been obtained. The
                 derivation of the transformation and the numerical
                 results of several applications are presented.",
  acknowledgement = ack-nhfb,
  fjournal =     "Physical Review",
  journal-URL =  "http://prola.aps.org/browse/PR",
}

@TechReport{Lowdin:1958:AMW,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Angular Momentum Wave Functions Constructed by
                 Projection Operators",
  type =         "Technical Note",
  number =       "12",
  institution =  "Uppsala University",
  address =      "Uppsala, Sweden",
  pages =        "35",
  day =          "10",
  month =        may,
  year =         "1958",
  bibdate =      "Sat Aug 12 16:54:06 2023",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Published in \cite{Lowdin:1964:AMW}.",
  URL =          "https://www.osti.gov/servlets/purl/4302760",
  abstract =     "The conventional method of constructing wave functions
                 of pure angular momentum for a composite system is
                 based on the idea of coupling the angular momenta of
                 the constituents. Instead of this synthetic method, an
                 analytical approach is here introduced. It is pointed
                 out that an arbitrary trial wave function for the total
                 system in a unique way must be resolvable into
                 orthogonal components of pure angular momentum
                 associated with different quantum numbers. A particular
                 component can be selected by means of certain
                 projection operators', which annihilate all components
                 except the one desired. Such a projection operator is
                 simply a product of commuting factors, each one of
                 which annihilates a specific eigenfunction to the
                 angular momentum under consideration. Physically this
                 idea is of importance, since one can now start out from
                 a rough model wave function based essentially on
                 qualitative arguments, for instance of the
                 independent-particle type, and then obtain a
                 mathematically and physically much better trial
                 function by selecting the particular component of the
                 original function which has the correct symmetry type
                 desired. The projection operators are studied in some
                 detail both as products and in expanded form. The case
                 of degenerate subspaces of the same angular momentum
                 quantum numbers is discussed, and the problem of
                 constructing an orthogonal subset of functions is
                 solved by a simple elimination procedure; the
                 connection with the conventional seniority idea is
                 briefly discussed.",
  acknowledgement = ack-nhfb,
}

@TechReport{Lowdin:1958:CFO,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Calcul des Fonctions d'Onde Mol{\'e}culaire",
  type =         "Technical Report",
  institution =  "Centre National de la Recherche Scientifique",
  address =      "Paris, France",
  pages =        "23",
  year =         "1958",
  bibdate =      "Tue Dec 26 12:34:19 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  remark =       "Cited in Britt Friis-Jensen, Sten Rettrup, and C. R.
                 Sarma, ``Indexing Scheme for Classes of {$ {\cal S}_N
                 $}; Partitions of {$N$}'', Int. J. Quant. Chem. {\bf
                 64}(4), 421--426, September 5 (1997).",
  xxnote =       "Check pages?? Was this really a technical report??",
}

@TechReport{Lowdin:1958:EIV,
  author =       "Per-Olov L{\"o}wdin",
  title =        "An Elementary Iteration-Variation Procedure for
                 Solving the {Schr{\"o}dinger} Equation",
  type =         "Preliminary Technical report",
  number =       "11",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  day =          "23",
  month =        apr,
  year =         "1958",
  bibdate =      "Fri Jun 16 11:32:12 2017",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Published in \cite{Lowdin:1963:SPTa}",
  acknowledgement = ack-nhfb,
  remark =       "Cited in \cite{Lowdin:1959:CUM}.",
}

@Article{Lowdin:1958:GHF,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Generalizations of the {Hartree--Fock} scheme",
  journal =      "Annales Academiae regiae scientiarum upsaliensis",
  volume =       "2",
  number =       "??",
  pages =        "127--135",
  year =         "1958",
  CODEN =        "????",
  ISSN =         "????",
  MRclass =      "81.00",
  MRnumber =     "22 #1375",
  MRreviewer =   "A. C. Hurley",
  bibdate =      "Thu Nov 16 11:51:44 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database",
  acknowledgement = ack-nhfb,
  journalabr =   "Ann. Acad. Reg. Sci. Upsal.",
}

@Article{Lowdin:1958:KKB,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Den Kovalenta Kemiska Bindningen i Kvantmekanisk
                 Belysning. ({Swedish}) [{The} Covalent Chemical Bond in
                 a Quantum-Mechanical Light]",
  journal =      j-ELEMENTA-TMFK,
  volume =       "40",
  number =       "??",
  pages =        "1--16",
  year =         "1958",
  CODEN =        "EMNTAE",
  ISSN =         "0013-5933",
  bibdate =      "Fri Nov 17 08:36:30 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Elementa: tidskrift for matematik, fysik och kemi",
  language =     "Swedish",
}

@InProceedings{Lowdin:1958:NFM,
  author =       "P.-O. L{\"o}wdin",
  booktitle =    "Proc. Paris Symposium",
  title =        "Nature des Fonctions de la {M}{\'e}somerie. ({French})
                 [{Nature} of Mesomeric Functions]",
  volume =       "LXXXII",
  publisher =    "Centre National de la Recherche Scientifique",
  address =      "Paris, France",
  pages =        "23--37",
  year =         "1958",
  bibdate =      "Tue Dec 26 12:35:41 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  language =     "French",
  xxnote =       "Check year: 1957 or 1958?? Was this a conference
                 paper, or a technical report??",
}

@TechReport{Lowdin:1958:RSS,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Report from the {Summer School in Quantum Chemistry
                 held in V{\aa}l{\aa}dalen, Sweden, July 26--August 30,
                 1958}",
  type =         "Report",
  number =       "??",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  year =         "1958",
  bibdate =      "Fri Jun 16 11:41:39 2017",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InProceedings{Lowdin:1958:SAR,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "W. O. Milligan",
  booktitle =    "{Proceedings of the Robert A. Welch Foundation
                 Conferences on Chemical Research. II. Atomic Structure.
                 December 1--3, 1958, Houston, Texas}",
  title =        "Some Aspects of the Recent Development of the Theory
                 of the Electronic Structure of Atoms",
  publisher =    "Robert A. Welch Foundation",
  address =      "Houston, TX, USA",
  bookpages =    "203",
  pages =        "4--75",
  year =         "1958",
  CODEN =        "PRAWAC",
  ISSN =         "0557-1588",
  bibdate =      "Tue Dec 05 09:15:21 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1958:SDP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Spin Degeneracy Problem",
  journal =      "Coll. Int. Centre Nat. Rech. Sci. Paris",
  volume =       "82",
  number =       "??",
  pages =        "23--??",
  year =         "1958",
  bibdate =      "Fri Nov 17 08:37:27 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  xxnote =       "What is full name of this journal?? Is it ``Colloques
                 internationaux du Centre national de la recherche
                 scientifique. Sciences humaines''??",
}

@Article{Shull:1958:LEV,
  author =       "Harrison Shull and Per-Olov L{\"o}wdin",
  title =        "Letter to the Editor: Variation theorem for excited
                 states",
  journal =      j-PHYS-REV-2,
  volume =       "110",
  number =       "6",
  pages =        "1466--1467",
  day =          "15",
  month =        jun,
  year =         "1958",
  CODEN =        "PHRVAO",
  DOI =          "https://doi.org/10.1103/PhysRev.110.1466",
  ISSN =         "0031-899X (print), 1536-6065 (electronic)",
  ISSN-L =       "0031-899X",
  bibdate =      "Mon Dec 18 10:59:17 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Zentralblatt Math database",
  URL =          "http://prola.aps.org/abstract/PR/v110/i6/p1466_1",
  ZMnumber =     "092.22705",
  acknowledgement = ack-nhfb,
  fjournal =     "Physical Review (2)",
  journal-URL =  "http://prola.aps.org/browse/PR",
  keywords =     "mechanics of particles and systems",
}

@TechReport{Shull:1958:SCN,
  author =       "Harrison Shull and Per-Olov L{\"o}wdin",
  title =        "Superposition of Configurations and Natural Spin
                 Orbitals. Application to the {He} Problem",
  type =         "Preliminary Technical report",
  number =       "13",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  day =          "15",
  month =        jun,
  year =         "1958",
  bibdate =      "Fri Jun 16 11:34:40 2017",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Published in \cite{Shull:1959:SCN}.",
  acknowledgement = ack-nhfb,
  remark =       "Cited in \cite{Lowdin:1959:CUM}.",
}

@Article{Hirschfelder:1959:LRI,
  author =       "J. O. Hirschfelder and P.-O. L{\"o}wdin",
  title =        "Long-range interaction of two $ 1 s $-hydrogen atoms
                 expressed in terms of natural spin-orbitals",
  journal =      j-MOL-PHYS,
  volume =       "2",
  number =       "3",
  pages =        "229--258",
  month =        jul,
  year =         "1959",
  CODEN =        "MOPHAM",
  ISSN =         "0026-8976 (print), 1362-3028 (electronic)",
  ISSN-L =       "0026-8976",
  bibdate =      "Mon Dec 18 10:47:06 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Zentralblatt Math database",
  ZMnumber =     "088.23206",
  acknowledgement = ack-nhfb,
  fjournal =     "Molecular Physics",
  journal-URL =  "http://www.tandfonline.com/loi/tmph20",
  journalabr =   "Molecular Phys.",
  keywords =     "structure of matter",
}

@Article{Lowdin:1959:CPM,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Correlation Problem in Many-Electron Quantum
                 Mechanics. {I}. {Review} of Different Approaches and
                 Discussion of Some Current Ideas",
  journal =      j-ADV-CHEM-PHYS,
  volume =       "2",
  pages =        "207--322",
  year =         "1959",
  CODEN =        "ADCPAA",
  ISSN =         "0065-2385 (print), 1934-4791 (electronic)",
  ISSN-L =       "0065-2385",
  MRclass =      "81.00",
  MRnumber =     "21 #5453",
  MRreviewer =   "A. C. Hurley",
  bibdate =      "Fri Dec 15 17:33:14 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Advances in Chemical Physics",
  journalabr =   "Adv. Chem. Phys.",
  remark =       "Annual book series: no issue numbers.",
}

@Article{Lowdin:1959:CUM,
  author =       "Per-Olov L{\"o}wdin and Lajos R{\`e}dei",
  title =        "Combined use of the methods of superposition of
                 configurations and correlation factor on the ground
                 states of the helium-like atoms",
  journal =      j-PHYS-REV,
  volume =       "114",
  number =       "3",
  pages =        "752--757",
  day =          "1",
  month =        may,
  year =         "1959",
  CODEN =        "PHRVAO",
  DOI =          "https://doi.org/10.1103/PhysRev.114.752",
  ISSN =         "0031-899X (print), 1536-6065 (electronic)",
  ISSN-L =       "0031-899X",
  MRclass =      "81.00",
  MRnumber =     "21 #5455",
  MRreviewer =   "D. F. Mayers",
  bibdate =      "Mon Dec 18 10:59:33 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; Zentralblatt Math database",
  URL =          "http://prola.aps.org/abstract/PR/v114/i3/p752_1",
  ZMnumber =     "088.44803",
  acknowledgement = ack-nhfb,
  fjournal =     "Physical Review",
  journal-URL =  "http://prola.aps.org/browse/PR",
  keywords =     "structure of matter",
}

@InProceedings{Lowdin:1959:IVA,
  author =       "Per-Olov L{\"o}wdin",
  booktitle =    "Nord-SAM, Karlskrona and Lund, Sweden",
  title =        "En Iterations-Variationsmetod for att {L}{\"o}sa
                 Egenvardesproblem. ({Swedish}) [{An}
                 Iteration-Variation Method for Solving the Eigenvalue
                 Problem]",
  type =         "Technical Report",
  publisher =    "????",
  address =      "????",
  pages =        "199--209",
  year =         "1959",
  bibdate =      "Fri Nov 17 08:45:07 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  language =     "Swedish",
}

@TechReport{Lowdin:1959:SAR,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Aspects on the Recent Development of the Theory
                 of the Electronic Structure of Atoms",
  type =         "Technical Note",
  number =       "12",
  institution =  "Uppsala University",
  address =      "Uppsala, Sweden",
  pages =        "??",
  day =          "1",
  month =        jun,
  year =         "1959",
  bibdate =      "Sat Aug 12 17:02:37 2023",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Presented at the second Robert A. Welch Foundation
                 Conference on Chemical Research, II. Atomic Structure,
                 Houston, Texas, December 1--3, 1958.",
  URL =          "https://www.osti.gov/biblio/4180421",
  abstract =     "\ldots{}ially to many-electron atoms is presented.
                 Angular properties are examined, and it is shown that
                 atomic wave functions of pure angular momentum such as
                 spin, orbital angular momentum, and total angular
                 momentum can be constructed by means of the recently
                 developed projection operator technique. Several
                 modifications of an approach in which superposition of
                 configurations is used are discussed in detail. The
                 wave functions resulting from this approach look
                 complicated but may often be simplified by going over
                 to the basic set of spin orbitals which is
                 characterized by having maximum occupation numbers.",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1959:SPV,
  author =       "P.-O. L{\"o}wdin",
  title =        "Scaling Problem, Virial Theorem, and Connected
                 Relations in Quantum Mechanics",
  journal =      j-J-MOL-SPECTROSC,
  volume =       "3",
  number =       "1",
  pages =        "46--66",
  month =        feb,
  year =         "1959",
  CODEN =        "JMOSA3",
  DOI =          "https://doi.org/10.1016/0022-2852(59)90006-2",
  ISSN =         "0022-2852 (print), 1096-083x (electronic)",
  ISSN-L =       "0022-2852",
  bibdate =      "Fri Dec 15 18:52:42 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Molecular Spectroscopy",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00222852",
  journalabr =   "J. Mol. Spect.",
}

@Article{Shull:1959:SCN,
  author =       "Harrison Shull and Per-Olov L{\"o}wdin",
  title =        "Superposition of Configurations and Natural Spin
                 Orbitals. {Applications} to the {He} Problem",
  journal =      j-J-CHEM-PHYS,
  volume =       "30",
  number =       "3",
  pages =        "617--626",
  month =        mar,
  year =         "1959",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1730019",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Fri Dec 15 18:36:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Lowdin:1960:CIO,
  author =       "P.-O. L{\"o}wdin and R. Pauncz and J. de Heer",
  title =        "On the Calculation of the Inverse of the Overlap
                 Matrix in Cyclic Systems",
  journal =      j-J-MATH-PHYS,
  volume =       "1",
  number =       "6",
  pages =        "461--467",
  month =        jun,
  year =         "1960",
  CODEN =        "JMAPAQ",
  DOI =          "https://doi.org/10.1063/1.1703682",
  ISSN =         "0022-2488 (print), 1089-7658 (electronic), 1527-2427",
  ISSN-L =       "0022-2488",
  bibdate =      "Fri Oct 28 06:54:26 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 http://www.aip.org/ojs/jmp.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathphys1960.bib;
                 Zentralblatt Math database",
  URL =          "http://jmp.aip.org/resource/1/jmapaq/v1/i6/p461_s1",
  ZMnumber =     "098.09301",
  abstract =     "The inverse of the overlap matrix of a cyclic system
                 has been computed in three different ways, each of
                 which throws light on a different aspect of the subject
                 and has its own range of applicability to related
                 problems. In all these derivations extensive use has
                 been made of the properties of the Chebyshev
                 polynomials. The results hold for every cyclic
                 symmetric matrix.",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Physics",
  journal-URL =  "http://jmp.aip.org/",
  keywords =     "numerical analysis",
  onlinedate =   "22 December 2004",
  pagecount =    "7",
}

@Article{Lowdin:1960:ETT,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Expansion theorems for the total wave function and
                 extended {Hartree--Fock} schemes",
  journal =      j-REV-MOD-PHYS,
  volume =       "32",
  number =       "2",
  pages =        "328--334",
  month =        apr,
  year =         "1960",
  CODEN =        "RMPHAT",
  DOI =          "https://doi.org/10.1103/RevModPhys.32.328",
  ISSN =         "0034-6861 (print), 1538-4527 (electronic), 1539-0756",
  ISSN-L =       "0034-6861",
  MRclass =      "81.00",
  MRnumber =     "22 #3509",
  MRreviewer =   "A. C. Hurley",
  bibdate =      "Fri Dec 15 19:28:49 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; nhfb-allref.bib; Zentralblatt Math
                 database",
  URL =          "http://rmp.aps.org/abstract/RMP/v32/i2/p328_1",
  ZMnumber =     "091.23704",
  acknowledgement = ack-nhfb,
  fjournal =     "Reviews of Modern Physics",
  journal-URL =  "http://rmp.aps.org/browse",
  keywords =     "structure of matter",
}

@Article{Lowdin:1960:QTE,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Quantum Theory of Electronic Structure of Molecules",
  journal =      j-ANN-REV-PHYS-CHEM,
  volume =       "11",
  pages =        "107--132",
  year =         "1960",
  CODEN =        "ARPLAP",
  DOI =          "https://doi.org/10.1146/annurev.pc.11.100160.000543",
  ISSN =         "0066-426X (print), 1545-1593 (electronic)",
  ISSN-L =       "0066-426X",
  bibdate =      "Fri Nov 17 08:47:03 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Annual Review of Physical Chemistry",
  journal-URL =  "http://www.annualreviews.org/journal/physchem",
}

@TechReport{Lowdin:1960:SPT,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Studies in Perturbation Theory. {V}. {Some} Aspects on
                 the Exact Self-Consistent Field Theory",
  type =         "Preprint",
  number =       "5",
  institution =  inst-QTP,
  address =      inst-QTP:adr,
  pages =        "33",
  day =          "15",
  month =        aug,
  year =         "1960",
  bibdate =      "Sun Mar 23 16:34:06 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1961:NST,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Note on the separability theorem for electron pairs",
  journal =      j-J-CHEM-PHYS,
  volume =       "35",
  number =       "1",
  pages =        "78--81",
  month =        jul,
  year =         "1961",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1731935",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  MRclass =      "81.46",
  MRnumber =     "23 #B907",
  MRreviewer =   "A. C. Hurley",
  bibdate =      "Thu Nov 16 11:51:44 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database",
  URL =          "http://link.aip.org/link/doi/10.1063/1.1731935",
  abstract =     "It is shown that, if two functions {$ \Lambda_A(1, 2,
                 3, \ldots {}, p) $} and {$ \Lambda_B(1, 2 ', 3 ',
                 \ldots {}, q') $} describing two groups {$A$} and {$B$}
                 of electrons are orthogonal with respect to electron 1
                 then there exists a complete orthonormal set of one
                 electron functions {$ \Phi_k(1) $} such that the
                 functions actually occurring with nonvanishing
                 coefficients in the expansion of one of the functions
                 cannot simultaneously occur in the expansion of the
                 other function. This is a generalization of a
                 separation theorem recently found by Arai.",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Lowdin:1961:PCC,
  author =       "Per-Olov L{\"o}wdin",
  title =        "The Principle of Causality, the Chemical Bond and
                 Modern Quantum Chemistry",
  journal =      "Annales Academiae regiae scientiarum upsaliensis",
  volume =       "5",
  number =       "??",
  pages =        "63--78",
  year =         "1961",
  bibdate =      "Fri Nov 17 08:47:53 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  journalabr =   "Ann. Acad. Reg. Sci. Upsaliensis",
  xxCODEN =      "none",
  xxISSN =       "none",
}

@Article{Calais:1962:SMT,
  author =       "Jean-Louis Calais and Per-Olov L{\"o}wdin",
  title =        "A Simple Method of Treating Atomic Integrals
                 Containing Functions of $ r_{12} $",
  journal =      j-J-MOL-SPECTROSC,
  volume =       "8",
  number =       "3",
  pages =        "203--211",
  month =        mar,
  year =         "1962",
  CODEN =        "JMOSA3",
  ISSN =         "0022-2852 (print), 1096-083x (electronic)",
  ISSN-L =       "0022-2852",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Molecular Spectroscopy",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00222852",
  journalabr =   "J. Mol. Spect.",
}

@Article{Froman:1962:VTC,
  author =       "A. Fr{\"o}man and Per-Olov L{\"o}wdin",
  title =        "Virial Theorem and Cohesive Energies of Solids,
                 Particularly Ionic Crystals",
  journal =      j-J-PHYS-CHEM-SOLIDS,
  volume =       "23",
  pages =        "75--84",
  year =         "1962",
  CODEN =        "JPCSAW",
  ISSN =         "0022-3697 (print), 1879-2553 (electronic)",
  ISSN-L =       "0022-3697",
  bibdate =      "Fri Dec 15 19:17:06 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "The Journal of Physics and Chemistry of Solids",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00223697",
  remark =       "This journal does not have issue numbers.",
}

@Article{Lowdin:1962:BTV,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Band theory, valence bond, and tight-binding
                 calculations",
  journal =      j-J-APPL-PHYS,
  volume =       "33",
  number =       "1",
  pages =        "251--280",
  month =        jan,
  year =         "1962",
  CODEN =        "JAPIAU",
  DOI =          "https://doi.org/10.1063/1.1777106",
  ISSN =         "0021-8979 (print), 1089-7550 (electronic), 1520-8850",
  ISSN-L =       "0021-8979",
  bibdate =      "Sun Oct 09 11:16:38 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.aip.org/link/doi/10.1063/1.1777106",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Applied Physics",
  journal-URL =  "http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4915369",
}

@Unpublished{Lowdin:1962:CSM,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Is Cancer a Sub-Molecular Disease Caused by ``Proton
                 Exchange''?",
  day =          "1",
  month =        jun,
  year =         "1962",
  bibdate =      "Fri Dec 22 12:50:57 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Unpublished manuscript.",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1962:ECS,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Exchange, correlation, and spin effects in molecular
                 and solid-state theory",
  journal =      j-REV-MOD-PHYS,
  volume =       "34",
  number =       "1",
  pages =        "80--87",
  month =        jan,
  year =         "1962",
  CODEN =        "RMPHAT",
  DOI =          "https://doi.org/10.1103/RevModPhys.34.80",
  ISSN =         "0034-6861 (print), 1538-4527 (electronic), 1539-0756",
  ISSN-L =       "0034-6861",
  MRclass =      "82.99",
  MRnumber =     "25 #1901",
  MRreviewer =   "A. C. Hurley",
  bibdate =      "Thu Nov 16 11:51:44 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database",
  URL =          "http://rmp.aps.org/abstract/RMP/v34/i1/p80_1",
  acknowledgement = ack-nhfb,
  fjournal =     "Reviews of Modern Physics",
  journal-URL =  "http://rmp.aps.org/browse",
}

@Unpublished{Lowdin:1962:EIV,
  author =       "Per-Olov L{\"o}wdin",
  title =        "An Elementary Iteration-Variation Procedure for
                 Solving the {Schr{\"o}dinger} Equation",
  year =         "1962",
  bibdate =      "Fri Dec 22 12:50:57 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Unpublished manuscript.",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1962:NCM,
  author =       "Per-Olov L{\"o}wdin",
  title =        "The Normal Constants of Motion in Quantum Mechanics
                 Treated by Projection Technique",
  journal =      j-REV-MOD-PHYS,
  volume =       "34",
  number =       "3",
  pages =        "520--530",
  month =        jul,
  year =         "1962",
  CODEN =        "RMPHAT",
  DOI =          "https://doi.org/10.1103/RevModPhys.34.520",
  ISSN =         "0034-6861 (print), 1538-4527 (electronic), 1539-0756",
  ISSN-L =       "0034-6861",
  MRclass =      "81.47",
  MRnumber =     "25 #4784",
  MRreviewer =   "E. L. Hill",
  bibdate =      "Thu Nov 16 11:51:44 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; nhfb-allref.bib; Zentralblatt Math
                 database",
  ZMnumber =     "105.21603",
  acknowledgement = ack-nhfb,
  fjournal =     "Reviews of Modern Physics",
  journal-URL =  "http://rmp.aps.org/browse",
  keywords =     "quantum theory",
}

@TechReport{Lowdin:1962:QGA,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Quantum Genetics and the Aperiodic Solid",
  type =         "Technical report",
  number =       "TN 85",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  day =          "11",
  month =        nov,
  year =         "1962",
  bibdate =      "Fri Dec 22 12:54:21 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Unpublished{Lowdin:1962:QTM,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Quantum Theory of Molecules of Importance in Cancer
                 Research",
  day =          "1",
  month =        jun,
  year =         "1962",
  bibdate =      "Fri Dec 22 12:50:57 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Unpublished manuscript.",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1962:QTN,
  author =       "P.-O. L{\"o}wdin",
  title =        "Quantum Theory of Nonmetallic Crystals. {Band} Theory,
                 Valence Bond, and Tight-Binding Calculations",
  journal =      j-J-APPL-PHYS,
  volume =       "33",
  number =       "1",
  pages =        "251--280",
  month =        jan,
  year =         "1962",
  CODEN =        "JAPIAU",
  ISSN =         "0021-8979 (print), 1089-7550 (electronic), 1520-8850",
  ISSN-L =       "0021-8979",
  bibdate =      "Fri Dec 15 19:38:45 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  ZMnumber =     "099.44803",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Applied Physics",
  journal-URL =  "http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4915369",
  journalabr-1 = "J. Applied Phys.",
  journalabr-2 = "J. appl. physi.",
  keywords =     "mechanics of particles and systems",
}

@Article{Lowdin:1962:SPTa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Studies in Perturbation Theory. {IV}. {Solution} of
                 Eigenvalue Problem by Projection Operator Formalism",
  journal =      j-J-MATH-PHYS,
  volume =       "3",
  number =       "5",
  pages =        "969--982",
  month =        may,
  year =         "1962",
  CODEN =        "JMAPAQ",
  DOI =          "https://doi.org/10.1063/1.1724312",
  ISSN =         "0022-2488 (print), 1089-7658 (electronic), 1527-2427",
  ISSN-L =       "0022-2488",
  MRclass =      "81.41",
  MRnumber =     "26 #4714",
  MRreviewer =   "A. C. Hurley",
  bibdate =      "Fri Oct 28 08:39:58 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 http://www.aip.org/ojs/jmp.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathphys1960.bib;
                 MathSciNet database; nhfb-allref.bib; Zentralblatt Math
                 database",
  URL =          "http://jmp.aip.org/resource/1/jmapaq/v3/i5/p969_s1",
  ZMnumber =     "109.22801",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Physics",
  journal-URL =  "http://jmp.aip.org/",
  keywords =     "mechanics of particles and systems",
  onlinedate =   "22 December 2004",
  pagecount =    "14",
}

@Article{Lowdin:1962:SPTb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Studies in Perturbation Theory. {V}. {Some} Aspects on
                 the Exact Self-Consistent Field Theory",
  journal =      j-J-MATH-PHYS,
  volume =       "3",
  number =       "6",
  pages =        "1171--1184",
  month =        nov # "\slash " # dec,
  year =         "1962",
  CODEN =        "JMAPAQ",
  DOI =          "https://doi.org/10.1063/1.1703860",
  ISSN =         "0022-2488 (print), 1089-7658 (electronic), 1527-2427",
  ISSN-L =       "0022-2488",
  MRclass =      "81.41",
  MRnumber =     "26 #4686",
  MRreviewer =   "A. C. Hurley",
  bibdate =      "Fri Oct 28 08:39:59 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 http://www.aip.org/ojs/jmp.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathphys1960.bib;
                 MathSciNet database; nhfb-allref.bib; Zentralblatt Math
                 database",
  URL =          "http://jmp.aip.org/resource/1/jmapaq/v3/i6/p1171_s1",
  ZMnumber =     "129.42707",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Physics",
  journal-URL =  "http://jmp.aip.org/",
  keywords =     "quantum theory",
  onlinedate =   "22 December 2004",
  pagecount =    "14",
}

@TechReport{Lowdin:1962:SRP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Recent Progress in the Quantum Theory of
                 Many-Electron Systems",
  type =         "Technical report",
  number =       "TN 83",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  day =          "15",
  month =        aug,
  year =         "1962",
  bibdate =      "Fri Dec 22 12:54:21 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Pauncz:1962:SAMa,
  author =       "R. Pauncz and J. de Heer and P.-O. L{\"o}wdin",
  title =        "Studies on the Alternant Molecular Orbital Method.
                 {I}. {General} Energy Expression for an Alternant
                 System with Closed-Shell Structure",
  journal =      j-J-CHEM-PHYS,
  volume =       "36",
  number =       "9",
  pages =        "2247--2256",
  day =          "1",
  month =        may,
  year =         "1962",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1732872",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Fri Dec 15 18:44:21 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.aip.org/link/doi/10.1063/1.1732872",
  abstract =     "The alternant molecular orbital method is used to
                 derive a general energy expression for an arbitrary
                 alternant system with closed shell structure. This
                 expression exhibits a simple dependence on a single
                 mixing parameter, minimization with respect to which
                 yields the optimum energy. An analysis reveals the
                 effectiveness of the method to depend on the relative
                 magnitude of two quantities, one involving the one
                 electron operator energies and the other related to
                 electron interaction integrals which connect the
                 bonding with the antibonding orbitals from the simple
                 ASMO scheme. Some comments on the method, in the light
                 of the results obtained, are added.",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Pauncz:1962:SAMb,
  author =       "R. Pauncz and J. de Heer and P.-O. L{\"o}wdin",
  title =        "Studies on the Alternant Molecular Orbital Method.
                 {II}. {Application} to Cyclic Systems",
  journal =      j-J-CHEM-PHYS,
  volume =       "36",
  number =       "9",
  pages =        "2257--2265",
  day =          "1",
  month =        may,
  year =         "1962",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1732873",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Fri Dec 15 18:45:06 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.aip.org/link/doi/10.1063/1.1732873",
  abstract =     "Using the general energy expression for an alternant
                 system with closed shell structure, obtained in our
                 previous paper on the alternant molecular orbital (AMO)
                 method, a numerical analysis is presented of cyclic
                 systems consisting of $ 2 n = 4 v + 2 $ electrons
                 moving in the field of $ 2 n $ [Complex chemical
                 formula] centers. Special attention is paid to the case
                 of large n, when we are essentially dealing with a
                 linear chain with Born von Karman periodicity
                 condition. The most important result obtained is that
                 the energy depression per electron (a measure for the
                 effectiveness of the method to take into account
                 electron correlation) decreases only slowly with
                 increasing n and approaches a limit in the neighborhood
                 of 0.4 ev. Hence the AMO method is useful even in the
                 case of large systems and may provide a powerful tool
                 for tackling certain problems in solid state theory. A
                 detailed discussion is given of the various
                 approximations incorporated in our analysis and a
                 critical comparison is made with some related results
                 recently obtained by other investigators.",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Coleman:1963:DSF,
  author =       "A. J. Coleman and P.-O. L{\"o}wdin and Darwin W.
                 Smith",
  title =        "Discussion on {``Structure of Fermion Density
                 Matrices''}",
  journal =      j-REV-MOD-PHYS,
  volume =       "35",
  number =       "3",
  pages =        "687--689",
  month =        jul,
  year =         "1963",
  CODEN =        "RMPHAT",
  DOI =          "https://doi.org/10.1103/RevModPhys.35.687",
  ISSN =         "0034-6861 (print), 1538-4527 (electronic), 1539-0756",
  ISSN-L =       "0034-6861",
  bibdate =      "Tue Dec 26 12:20:10 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Reviews of Modern Physics",
  journal-URL =  "http://rmp.aps.org/browse",
}

@Article{Harris:1963:DNE,
  author =       "Frank E. Harris and Robert K. Nesbet and Per-Olov
                 L{\"o}wdin and Ernest R. Davidson",
  title =        "Discussion on {``Natural Expansions and Properties of
                 the Chemical Bond''}",
  journal =      j-REV-MOD-PHYS,
  volume =       "35",
  number =       "3",
  pages =        "629--630",
  month =        jul,
  year =         "1963",
  CODEN =        "RMPHAT",
  DOI =          "https://doi.org/10.1103/RevModPhys.35.629",
  ISSN =         "0034-6861 (print), 1538-4527 (electronic), 1539-0756",
  ISSN-L =       "0034-6861",
  bibdate =      "Tue May 22 16:36:53 MDT 2012",
  bibsource =    "http://rmp.aps.org/toc/RMP/v35/i3;
                 https://www.math.utah.edu/pub/bibnet/authors/h/harris-frank-e.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/revmodphys1960.bib",
  URL =          "http://link.aps.org/doi/10.1103/RevModPhys.35.629;
                 http://rmp.aps.org/abstract/RMP/v35/i3/p629_1",
  acknowledgement = ack-nhfb,
  fjournal =     "Reviews of Modern Physics",
  journal-URL =  "http://rmp.aps.org/browse",
}

@Article{Lowdin:1963:ISAb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Symposium on Atomic and Molecular
                 Quantum Mechanics: Proceedings in Honor of Professor
                 Egil A. Hylleraas and arranged by the University of
                 Florida at Sanibel Island, 14--19 January 1963}:
                 Introduction",
  journal =      j-REV-MOD-PHYS,
  volume =       "35",
  number =       "3",
  pages =        "415--415",
  month =        jul,
  year =         "1963",
  CODEN =        "RMPHAT",
  DOI =          "https://doi.org/10.1103/RevModPhys.35.415",
  ISSN =         "0034-6861 (print), 1538-4527 (electronic), 1539-0756",
  ISSN-L =       "0034-6861",
  bibdate =      "Fri Dec 15 19:33:22 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Reviews of Modern Physics",
  journal-URL =  "http://rmp.aps.org/browse",
}

@Article{Lowdin:1963:PTD,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Proton Tunneling in {DNA} and its Biological
                 Implications",
  journal =      j-REV-MOD-PHYS,
  volume =       "35",
  number =       "3",
  pages =        "724--732",
  month =        jul,
  year =         "1963",
  CODEN =        "RMPHAT",
  DOI =          "https://doi.org/10.1103/RevModPhys.35.724",
  ISSN =         "0034-6861 (print), 1538-4527 (electronic), 1539-0756",
  ISSN-L =       "0034-6861",
  bibdate =      "Fri Dec 15 19:34:11 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Reviews of Modern Physics",
  journal-URL =  "http://rmp.aps.org/browse",
}

@Article{Lowdin:1963:QG,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Quantum Genetics",
  journal =      j-INT-SCI-TECHNOL,
  volume =       "17",
  pages =        "64--68, 71--72, 74, 102",
  month =        may,
  year =         "1963",
  CODEN =        "ISCTAB",
  ISSN =         "0097-3777",
  bibdate =      "Fri Dec 15 17:32:54 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "International Science and Technology",
  remark =       "Volume number (== issue number) increments each
                 month.",
}

@TechReport{Lowdin:1963:QTTa,
  author =       "P.-O. L{\"o}wdin",
  title =        "Quantum Theory of Time-Dependent Phenomena Treated by
                 the Evolution Operator Technique",
  number =       "100",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  pages =        "????",
  month =        jun,
  year =         "1963",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  note =         "Published in \cite{Lowdin:1967:QTT}.",
  acknowledgement = ack-nhfb,
}

@TechReport{Lowdin:1963:RCI,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Remarks in Connection with the {International
                 Conference on Atomic and Molecular Quantum Mechanics in
                 Honour of Prof. E. A. Hylleraas on Sanibel Island,
                 January 13--19, 1963}",
  type =         "Technical report",
  number =       "TN 95",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  pages =        "9",
  day =          "13",
  month =        jan,
  year =         "1963",
  bibdate =      "Fri Dec 22 12:54:21 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Unpublished{Lowdin:1963:SDH,
  author =       "P.-O. L{\"o}wdin",
  title =        "{I}. The Symmetry Dilemma in the {Hartree--Fock}
                 Scheme. {II}. Symmetry Properties of the {NSO}'s.
                 {III}. {Variation} of the Density Matrix",
  year =         "1963",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  note =         "Sanibel Notes.",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1963:SPTa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Studies in Perturbation Theory. {I}. {An} Elementary
                 Iteration-Variation Procedure For Solving the
                 {Schr{\"o}dinger} Equation by Partitioning Technique",
  journal =      j-J-MOL-SPECTROSC,
  volume =       "10",
  number =       "1",
  pages =        "12--33",
  month =        jan,
  year =         "1963",
  CODEN =        "JMOSA3",
  ISSN =         "0022-2852 (print), 1096-083x (electronic)",
  ISSN-L =       "0022-2852",
  bibdate =      "Fri Dec 15 18:53:32 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Molecular Spectroscopy",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00222852",
  journalabr =   "J. Mol. Spect.",
}

@Article{Lowdin:1963:WRO,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Wave and reaction operators in the quantum theory of
                 many-particle systems",
  journal =      j-REV-MOD-PHYS,
  volume =       "35",
  number =       "3",
  pages =        "702--709",
  month =        jul,
  year =         "1963",
  CODEN =        "RMPHAT",
  DOI =          "https://doi.org/10.1103/RevModPhys.35.702",
  ISSN =         "0034-6861 (print), 1538-4527 (electronic), 1539-0756",
  ISSN-L =       "0034-6861",
  MRclass =      "81.47",
  MRnumber =     "31 #6610",
  MRreviewer =   "H. E. Rorschach, Jr.",
  bibdate =      "Fri Dec 15 19:33:52 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database",
  acknowledgement = ack-nhfb,
  fjournal =     "Reviews of Modern Physics",
  journal-URL =  "http://rmp.aps.org/browse",
}

@Article{Lykos:1963:DHF,
  author =       "P. Lykos and G. W. Pratt and P.-O. L{\"o}wdin and
                 Gilda M. Harris",
  title =        "Discussion on {``The Hartree--Fock Approximation''}",
  journal =      j-REV-MOD-PHYS,
  volume =       "35",
  number =       "3",
  pages =        "496--501",
  month =        jul,
  year =         "1963",
  CODEN =        "RMPHAT",
  DOI =          "https://doi.org/10.1103/RevModPhys.35.496",
  ISSN =         "0034-6861 (print), 1538-4527 (electronic), 1539-0756",
  ISSN-L =       "0034-6861",
  bibdate =      "Tue Dec 26 12:20:10 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Reviews of Modern Physics",
  journal-URL =  "http://rmp.aps.org/browse",
}

@Article{Lowdin:1964:AMW,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Angular Momentum Wavefunctions Constructed by
                 Projection Operators",
  journal =      j-REV-MOD-PHYS,
  volume =       "36",
  number =       "4",
  pages =        "966--976",
  month =        oct,
  year =         "1964",
  CODEN =        "RMPHAT",
  DOI =          "https://doi.org/10.1103/RevModPhys.36.966",
  ISSN =         "0034-6861 (print), 1538-4527 (electronic), 1539-0756",
  ISSN-L =       "0034-6861",
  MRclass =      "81.47",
  MRnumber =     "32 #8871",
  MRreviewer =   "A. C. Hurley",
  bibdate =      "Fri Dec 15 19:34:56 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Reviews of Modern Physics",
  journal-URL =  "http://rmp.aps.org/browse",
}

@Article{Lowdin:1964:EPT,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Effect of Proton Tunneling in {DNA} on Genetic
                 Information and Problems of Mutations, Aging, and
                 Tumors",
  journal =      j-BIOPOLYMERS-SYMPOSIA,
  volume =       "1",
  number =       "??",
  pages =        "161--181",
  month =        may,
  year =         "1964",
  ISSN =         "0523-6827",
  bibdate =      "Fri Nov 17 09:06:26 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Biopolymers Symposia",
}

@TechReport{Lowdin:1964:LAF,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Linear Algebra and the Fundaments of Quantum Theory",
  type =         "Technical report",
  number =       "TN 125",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  pages =        "81",
  day =          "1",
  month =        jul,
  year =         "1964",
  bibdate =      "Fri Dec 22 12:54:21 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Lowdin:1964:MOE,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Molecular Orbitals in the Exact {SCF} Theory",
  crossref =     "Lowdin:1964:MOC",
  pages =        "37--55",
  year =         "1964",
  bibdate =      "Fri Nov 17 09:15:14 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1964:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "1",
  pages =        "vii--viii",
  year =         "1964",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60372-X",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S006532760860372X",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@InCollection{Lowdin:1964:SAD,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Bernard Pullman",
  booktitle =    "Electronic Aspects of Biochemistry: proceedings of the
                 International Symposium held at Ravello, Italy,
                 September 16--18, 1963",
  title =        "Some Aspects on {DNA} Replication; Incorporation
                 Errors and Proton Transfer",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xiii + 582",
  pages =        "??--??",
  year =         "1964",
  LCCN =         "QH345.A1 I5 1963; QU4 I58 1963",
  bibdate =      "Fri Nov 17 09:17:03 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1964:SAQ,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Aspects of Quantum Biology",
  journal =      j-BIOPOLYMERS-SYMPOSIA,
  volume =       "1",
  number =       "??",
  pages =        "293--311",
  month =        may,
  year =         "1964",
  ISSN =         "0523-6827",
  bibdate =      "Fri Dec 15 17:40:48 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Biopolymers Symposia",
  xxnote =       "The journal `Biopolymers' has volume 1 in this year,
                 but University of Utah Marriott library does not have a
                 corresponding `Biopolymers Symposia' series??",
}

@Article{Lowdin:1964:SPTa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Studies in Perturbation Theory. {II}. {Generalization}
                 of the {Brillouin--Wigner} Formalism",
  journal =      j-J-MOL-SPECTROSC,
  volume =       "13",
  number =       "3",
  pages =        "326--331",
  month =        jul,
  year =         "1964",
  CODEN =        "JMOSA3",
  ISSN =         "0022-2852 (print), 1096-083x (electronic)",
  ISSN-L =       "0022-2852",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Molecular Spectroscopy",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00222852",
  journalabr =   "J. Mol. Spect.",
}

@Article{Lowdin:1964:SPTb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Studies in Perturbation Theory. {III}. {Solution} of
                 the {Schr{\"o}dinger} Equation under a Variation of a
                 Parameter",
  journal =      j-J-MOL-SPECTROSC,
  volume =       "13",
  number =       "3",
  pages =        "331--337",
  month =        jul,
  year =         "1964",
  CODEN =        "JMOSA3",
  ISSN =         "0022-2852 (print), 1096-083x (electronic)",
  ISSN-L =       "0022-2852",
  bibdate =      "Fri Dec 15 18:54:16 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Molecular Spectroscopy",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00222852",
}

@Article{Lowdin:1964:SPTc,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Studies in Perturbation Theory. {VI}. {Contraction} of
                 Secular Equations",
  journal =      j-J-MOL-SPECTROSC,
  volume =       "14",
  number =       "1",
  pages =        "112--118",
  month =        oct,
  year =         "1964",
  CODEN =        "JMOSA3",
  DOI =          "https://doi.org/10.1016/0022-2852(64)90106-7",
  ISSN =         "0022-2852 (print), 1096-083x (electronic)",
  ISSN-L =       "0022-2852",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Molecular Spectroscopy",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00222852",
  journalabr =   "J. Mol. Spect.",
}

@Article{Lowdin:1964:SPTd,
  author =       "P.-O. L{\"o}wdin",
  title =        "Studies in Perturbation Theory. {VII}. {Localized}
                 Perturbation",
  journal =      j-J-MOL-SPECTROSC,
  volume =       "14",
  number =       "1",
  pages =        "119--130",
  month =        oct,
  year =         "1964",
  CODEN =        "JMOSA3",
  DOI =          "https://doi.org/10.1016/0022-2852(64)90107-9",
  ISSN =         "0022-2852 (print), 1096-083x (electronic)",
  ISSN-L =       "0022-2852",
  bibdate =      "Fri Dec 15 18:55:05 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Molecular Spectroscopy",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00222852",
  journalabr =   "J. Mol. Spect.",
}

@Article{Lowdin:1964:SPTe,
  author =       "P.-O. L{\"o}wdin",
  title =        "Studies in Perturbation Theory. {VIII}. {Separation}
                 of {Dirac} Equation and Study of the Spin-Orbit
                 Coupling and {Fermi} Contact Terms",
  journal =      j-J-MOL-SPECTROSC,
  volume =       "14",
  number =       "1",
  pages =        "131--144",
  month =        oct,
  year =         "1964",
  CODEN =        "JMOSA3",
  DOI =          "https://doi.org/10.1016/0022-2852(64)90108-0",
  ISSN =         "0022-2852 (print), 1096-083x (electronic)",
  ISSN-L =       "0022-2852",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Molecular Spectroscopy",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00222852",
  journalabr =   "J. Mol. Spect.",
}

@Article{Hirschfelder:1965:LRI,
  author =       "J. O. Hirschfelder and Per-Olov L{\"o}wdin",
  title =        "Long-Range Interaction of Two $ 1 s $-Hydrogen Atoms
                 Expressed in Terms of Natural Spin-Orbitals",
  journal =      j-MOL-PHYS,
  volume =       "9",
  number =       "5",
  pages =        "491--496",
  year =         "1965",
  CODEN =        "MOPHAM",
  ISSN =         "0026-8976 (print), 1362-3028 (electronic)",
  ISSN-L =       "0026-8976",
  bibdate =      "Fri Nov 17 09:22:08 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Molecular Physics",
  journal-URL =  "http://www.tandfonline.com/loi/tmph20",
  journalabr =   "Mol. Phys.",
  remark =       "No months assigned to journal issues.",
}

@Article{Lowdin:1965:AOD,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Arvsanlagen och Deras {F}{\"o}r{\"a}ndringar --- Ur
                 Kvantgenetisk Synpunkt. ({Swedish}) [{Inheritance} and
                 its Changes --- From a Quantum Genetic Viewpoint]",
  journal =      j-SVENSK-NATURVETENSKAP,
  volume =       "??",
  number =       "??",
  pages =        "??--??",
  year =         "1965",
  CODEN =        "SVNAB5",
  ISSN =         "0373-1359",
  bibdate =      "Fri Nov 17 09:20:53 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Svensk naturvetenskap",
  language =     "Swedish",
}

@TechReport{Lowdin:1965:CUL,
  author =       "P.-O. L{\"o}wdin",
  title =        "The Calculation of Upper and Lower Bounds of Energy
                 Eigenvalues in Perturbation Theory by Means of
                 Partitioning Technique",
  number =       "150",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  month =        jul,
  year =         "1965",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1965:IET,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Isotope Effect in Tunneling and Its Influence on
                 Mutation Rates",
  journal =      j-MUTAT-RES,
  volume =       "2",
  number =       "3",
  pages =        "218--221",
  month =        jun,
  year =         "1965",
  CODEN =        "MUREAV",
  DOI =          "https://doi.org/10.1016/0027-5107(65)90031-X",
  ISSN =         "0027-5107 (print), 1873-135X (electronic)",
  ISSN-L =       "0027-5107",
  bibdate =      "Thu Dec 28 15:59:12 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MEDLINE database",
  acknowledgement = ack-nhfb,
  fjournal =     "Mutation Research",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00275107",
}

@Article{Lowdin:1965:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "2",
  pages =        "vii--viii",
  year =         "1965",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60069-6",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600696",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1965:PISb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{Proceedings of the International Symposium on Atomic
                 and Molecular Orbital Quantum Theory, Dedicated to
                 Professor Robert Sanderson Mulliken, Sanibel Island,
                 Florida, 18--23 January 1965: Introduction}",
  journal =      j-J-CHEM-PHYS,
  volume =       "43",
  number =       "10 (part 2)",
  pages =        "S1--S1",
  day =          "15",
  month =        nov,
  year =         "1965",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1701489",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Fri Dec 15 18:41:48 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.aip.org/link/doi/10.1063/1.1701489",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Lowdin:1965:QGA,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Quantum Genetics and the Aperiodic Solid. {Some}
                 Aspects of the Biological Problems of Heredity,
                 Mutations, Aging and Tumors in View of the Quantum
                 Theory of the {DNA} Molecule",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "2",
  pages =        "213--360",
  year =         "1965",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60076-3",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600763",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
  tableofcontents = "I. Introduction 216 \\
                 II. Historical Development of the Theory of the
                 Hereditary Mechanism 222 \\
                 III. Stereostructure of DNA and the Connection with Its
                 Biological Functioning 233 \\
                 IV. Properties of the Hydrogen Bond 248 \\
                 V. Quantum Theory of DNA 286 \\
                 VI. Some Remarks on the Replication of DNA, the
                 Formation of RNA, and the Coding Problem 308 \\
                 VII. Problem of Mutations 333 \\
                 VIII. Problem of Aging 339 \\
                 IX. Some Aspects on the Connection between the DNA
                 Structure and the Development of Tumors and Cancer 341
                 \\
                 X. Discussion 348 \\
                 References 351",
  toc =          "I. Introduction 216;\\
                 II. Historical Development of the Theory of the
                 Hereditary Mechanism 222;\\
                 III. Stereostructure of DNA and the Connection with Its
                 Biological Functioning 233;\\
                 IV. Properties of the Hydrogen Bond 248;\\
                 V. Quantum Theory of DNA 286;\\
                 VI. Some Remarks on the Replication of DNA, the
                 Formation of RNA, and the Coding Problem 308;\\
                 VII. Problem of Mutations 333;\\
                 VIII. Problem of Aging 339;\\
                 IX. Some Aspects on the Connection between the DNA
                 Structure and the Development of Tumors and Cancer
                 341;\\
                 X. Discussion 348;\\
                 References 351",
}

@TechReport{Lowdin:1965:QTT,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Quantum Theory of Time-Dependent Phenomena Treated by
                 the Evolution Operator Technique",
  type =         "Technical report",
  number =       "TN 100",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  pages =        "71",
  day =          "15",
  month =        jun,
  year =         "1965",
  bibdate =      "Fri Dec 22 12:54:21 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Also issued as QTP TF number 77.",
  acknowledgement = ack-nhfb,
  remark =       "This is the final version of a preliminary reported
                 dated June 1, 1963.",
}

@Article{Lowdin:1965:SPTa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Studies in Perturbation Theory. {IX}. {Connection}
                 Between Various Approaches in the Recent
                 Development-Evaluation of Upper Bounds to Energy
                 Eigenvalues in {Schr{\"o}dinger}'s Perturbation
                 Theory",
  journal =      j-J-MATH-PHYS,
  volume =       "6",
  number =       "8",
  pages =        "1341--1353",
  month =        aug,
  year =         "1965",
  CODEN =        "JMAPAQ",
  DOI =          "https://doi.org/10.1063/1.1704781",
  ISSN =         "0022-2488 (print), 1089-7658 (electronic), 1527-2427",
  ISSN-L =       "0022-2488",
  MRclass =      "81.41",
  MRnumber =     "31 #5472",
  MRreviewer =   "A. C. Hurley",
  bibdate =      "Fri Oct 28 11:54:42 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 http://www.aip.org/ojs/jmp.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathphys1965.bib;
                 MathSciNet database; nhfb-allref.bib; Zentralblatt Math
                 database",
  URL =          "http://jmp.aip.org/resource/1/jmapaq/v6/i8/p1341_s1",
  ZMnumber =     "136.47101",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Physics",
  journal-URL =  "http://jmp.aip.org/",
  keywords =     "quantum theory",
  onlinedate =   "22 December 2004",
  pagecount =    "13",
}

@Article{Lowdin:1965:SPTb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Studies in Perturbation Theory. {X}. {Lower} Bounds to
                 Energy Eigenvalues in Perturbation Theory. {Ground}
                 State",
  journal =      j-PHYS-REV,
  volume =       "139",
  number =       "2A",
  pages =        "A357--A372",
  day =          "19",
  month =        jul,
  year =         "1965",
  CODEN =        "PHRVAO",
  DOI =          "https://doi.org/10.1103/PhysRev.139.A357",
  ISSN =         "0031-899X (print), 1536-6065 (electronic)",
  ISSN-L =       "0031-899X",
  MRclass =      "81.41",
  MRnumber =     "32 #5242",
  MRreviewer =   "A. C. Hurley",
  bibdate =      "Tue Dec 26 12:43:53 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Physical Review",
  journal-URL =  "http://prola.aps.org/browse/PR",
}

@Article{Lowdin:1965:SPTc,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Studies in perturbation theory. {XI}. {Lower} bounds
                 to energy eigenvalues, ground state, and excited
                 states",
  journal =      j-J-CHEM-PHYS,
  volume =       "43",
  number =       "10 (part 2)",
  pages =        "S175--S185",
  day =          "15",
  month =        nov,
  year =         "1965",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1701483",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  MRclass =      "81.41",
  MRnumber =     "32 #3668",
  MRreviewer =   "A. C. Hurley",
  bibdate =      "Fri Dec 15 18:45:52 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@TechReport{Lowdin:1965:SPTd,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Studies in Perturbation Theory. {XII}. {The}
                 Calculation of Upper and Lower Bounds of Energy
                 Eigenvalues in Perturbation Theory by Means of
                 Partitioning Techniques",
  type =         "Report",
  number =       "TN 150",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  pages =        "255--292",
  day =          "1",
  month =        jul,
  year =         "1965",
  bibdate =      "Sun Mar 23 16:41:07 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Lowdin:1966:CPJ,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Comments on {Professor John C. Slater}'s Paper,
                 {``Cohesion in Monovalent Metals''}",
  crossref =     "Lowdin:1966:QTA",
  pages =        "15--??",
  year =         "1966",
  bibdate =      "Fri Nov 17 09:23:58 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Lowdin:1966:CUL,
  author =       "Per-Olov L{\"o}wdin",
  booktitle =    "Perturbation Theory and its Applications in Quantum
                 Mechanics (Proc. Adv. Sem. Math. Res. Center, U.S.
                 Army, Theoret. Chem. Inst., Univ. of Wisconsin,
                 Madison, Wis., 1965)",
  title =        "The calculation of upper and lower bounds of energy
                 eigenvalues in perturbation theory by means of
                 partitioning techniques",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "255--294",
  year =         "1966",
  MRclass =      "81.41",
  MRnumber =     "34 #5410",
  MRreviewer =   "H. W. Lewis",
  bibdate =      "Thu Nov 16 11:51:44 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; Zentralblatt Math database",
  ZMnumber =     "194.28905",
  acknowledgement = ack-nhfb,
}

@TechReport{Lowdin:1966:GAC,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Group Algebra, Convolution Algebra, and Applications
                 to Quantum Mechanics",
  type =         "Technical report",
  number =       "TN 176",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  day =          "15",
  month =        jul,
  year =         "1966",
  bibdate =      "Fri Dec 22 12:54:21 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@TechReport{Lowdin:1966:PHFa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "The Projected {Hartree--Fock} Method",
  type =         "Technical report",
  number =       "TN 170",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  day =          "1",
  month =        mar,
  year =         "1966",
  bibdate =      "Fri Dec 22 12:54:21 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@TechReport{Lowdin:1966:PHFb,
  author =       "P.-O. L{\"o}wdin",
  title =        "The Projected {Hartree--Fock} Method",
  type =         "Technical report",
  number =       "TF 83",
  institution =  inst-QTP,
  address =      inst-QTP:adr,
  pages =        "41 + 14",
  month =        mar,
  year =         "1966",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Lowdin:1966:PHFc,
  author =       "Per-Olov L{\"o}wdin",
  title =        "The Projected {Hartree--Fock} Method. {An} Extension
                 of the Independent-Particles Schemes",
  crossref =     "Lowdin:1966:QTA",
  pages =        "601--??",
  year =         "1966",
  bibdate =      "Fri Nov 17 09:23:58 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@TechReport{Lowdin:1966:RP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Reports and Publications",
  type =         "Report",
  number =       "??",
  institution =  "Solid State and Molecular Theory Group, MIT",
  address =      "Cambridge, MA",
  pages =        "97--101",
  month =        jul,
  year =         "1966",
  bibdate =      "Sun Mar 23 18:59:22 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@TechReport{Lowdin:1966:SPH,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Properties of the Hydrogen Bond in Biochemistry
                 with Particular Reference to the Stability of the
                 Genetic Code",
  type =         "Technical report",
  number =       "QB 33",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  day =          "31",
  month =        aug,
  year =         "1966",
  bibdate =      "Fri Dec 22 12:54:21 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InProceedings{Lowdin:1966:SPT,
  author =       "P.-O. L{\"o}wdin",
  editor =       "C. H. Wilcox",
  booktitle =    "Perturbation Theory",
  title =        "Studies in Perturbation Theory. {XII}. {The}
                 Calculation of Upper and Lower Bounds of Energy
                 Eigenvalues in Perturbation Theory by Means of
                 Partitioning Techniques",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "255--294",
  year =         "1966",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
}

@TechReport{Lowdin:1967:EPLa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Eigenvalue Problem in a Linearly Dependent Basis and
                 the Super Secular Equation",
  type =         "Preprint",
  number =       "108",
  institution =  inst-QTP,
  address =      inst-QTP:adr,
  day =          "1",
  month =        jun,
  year =         "1967",
  bibdate =      "Sun Mar 23 17:53:55 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1967:EPLb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Eigenvalue Problem in a Linearly Dependent Basis and
                 the Super Secular Equation",
  journal =      j-IJQC-SYMP,
  volume =       "1",
  number =       "S1",
  pages =        "811--827",
  year =         "1967",
  CODEN =        "IJQSAF",
  DOI =          "https://doi.org/10.1002/qua.560010690",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Nov 18 09:39:03 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib;
                 nhfb-allref.bib",
  abstract =     "The solution of the Schr{\"o}dinger equation HK \Psi =
                 E \Psi is discussed in terms of a basis \Phi of n
                 functions of which only p are linearly independent.
                 After introducing a variable \unknownvar and the matrix
                 K = \Phi | H - \unknownvar \unknownvar 1| \Phi = H -
                 \unknownvar \delta , a super-secular-equation |K -
                 \Delta . 1| = 0 is discussed. It is shown that the
                 n-valued function \Delta = \Delta (\unknownvar) has (n
                 - p) branches which are identically vanishing, and p
                 branches which are monotonously decreasing functions of
                 \unknownvar; the zero-points of the latter, \Delta
                 (\unknownvar) = 0, correspond to the eigenvalues
                 \unknownvar = E desired. The coefficients in the
                 characteristic polynomial P(Z) = |K - Z. 1| are
                 studied, and it is shown that the eigenvalue problem is
                 equivalent to setting the sum of the principal minors
                 of order p of |K| equal to zero. The same problem is
                 also discussed by carrying out a canonical
                 orthonormalization of the basis which is shown to lead
                 to the same result.The method is applied to the problem
                 of the group-theoretical splitting of the secular
                 equation due to symmetry properties of the Hamiltonian.
                 Following Byers-Brown, it is shown that a block of the
                 secular equation corresponding to a specific
                 irreducible representation \alpha depends only on the
                 characters X \alpha and not on the full matrices \gamma
                 \alpha .",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Chemistry Symposium",
  journal-URL =  "http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-461X",
}

@Article{Lowdin:1967:GAC,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Group Algebra, Convolution Algebra, and Applications
                 to Quantum Mechanics",
  journal =      j-REV-MOD-PHYS,
  volume =       "39",
  number =       "2",
  pages =        "259--287",
  month =        apr,
  year =         "1967",
  CODEN =        "RMPHAT",
  DOI =          "https://doi.org/10.1103/RevModPhys.39.259",
  ISSN =         "0034-6861 (print), 1538-4527 (electronic), 1539-0756",
  ISSN-L =       "0034-6861",
  MRclass =      "81.22 (22.65)",
  MRnumber =     "34 #8769",
  bibdate =      "Tue May 22 16:36:59 MDT 2012",
  bibsource =    "http://rmp.aps.org/toc/RMP/v39/i2;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/revmodphys1960.bib;
                 MathSciNet database; nhfb-allref.bib; Zentralblatt Math
                 database",
  URL =          "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 http://link.aps.org/doi/10.1103/RevModPhys.39.259;
                 http://rmp.aps.org/abstract/RMP/v39/i2/p259_1",
  ZMnumber =     "163.21801",
  acknowledgement = ack-nhfb,
  fjournal =     "Reviews of Modern Physics",
  journal-URL =  "http://rmp.aps.org/browse",
  keywords =     "quantum theory",
}

@Article{Lowdin:1967:NQC,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Nature of Quantum Chemistry",
  journal =      j-IJQC,
  volume =       "1",
  number =       "1",
  pages =        "7--12",
  month =        jan,
  year =         "1967",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560010103",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib; IEEE
                 INSPEC database (1968--2000); nhfb-allref.bib",
  abstract =     "Tries to distinguish clearly between the mathematical
                 and logical treatment itself and the physical and
                 chemical arguments. This is not always so easy. If an
                 experimental description of a problem is given, the
                 clear logical and mathematical analysis of the
                 situation and the theoretical formulation of the
                 problem is often the most difficult part of the
                 treatment. Once this has been achieved, it is easier to
                 proceed. It is then of great importance that the basic
                 assumptions are clearly stated, and the mathematical
                 and logical treatment should further be carried out
                 strictly as far as is possible",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  remark =       "Sanibel Symposium in honor of John C. Slater
                 \cite{Lowdin:1967:PIS}.",
}

@Article{Lowdin:1967:Pa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "3",
  pages =        "vii--viii",
  year =         "1967",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60083-0",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600830",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
  xxpages =      "vii--vii",
}

@Article{Lowdin:1967:Pb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Program",
  journal =      j-IJQC,
  volume =       "1",
  number =       "1",
  pages =        "1--6",
  month =        jan,
  year =         "1967",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560010102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Dec 15 17:43:01 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  remark =       "Sanibel Symposium in honor of John C. Slater
                 \cite{Lowdin:1967:PIS}.",
}

@Article{Lowdin:1967:QTT,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Quantum Theory of Time-Dependent Phenomena Treated by
                 the Evolution Operator Technique",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "3",
  pages =        "323--381",
  year =         "1967",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60092-1",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  note =         "Earlier edition available as technical report
                 \cite{Lowdin:1963:QG}.",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600921",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
  tableofcontents = "I. Introduction 324 \\
                 II. Coordinate Space and Momentum Space; Phase Problem
                 in Quantum Mechanics 332 \\
                 III. Schr{\"o}dinger Equation 340 \\
                 IV. Schr{\"o}dinger Equation for Particles in
                 Electromagnetic Field 347 \\
                 V. Evolution Operator 355 \\
                 VI. Reformulation of Quantum Theory 361 \\
                 VII. Transition Probabilities 363 \\
                 VIII. Time-Dependent Perturbation Theory 371 \\
                 IX. Discussion 378 \\
                 APPENDIX. Evaluation of Certain Integrals 379 \\
                 References 381",
  toc =          "I. Introduction 324;\\
                 II. Coordinate Space and Momentum Space; Phase Problem
                 in Quantum Mechanics 332;\\
                 III. Schr{\"o}dinger Equation 340;\\
                 IV. Schr{\"o}dinger Equation for Particles in
                 Electromagnetic Field 347;\\
                 V. Evolution Operator 355;\\
                 VI. Reformulation of Quantum Theory 361;\\
                 VII. Transition Probabilities 363;\\
                 VIII. Time-Dependent Perturbation Theory 371;\\
                 IX. Discussion 378;\\
                 APPENDIX. Evaluation of Certain Integrals 379;\\
                 References 381",
}

@TechReport{Lowdin:1967:SCT,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Comments on the Treatment of Symmetry Properties
                 in Perturbation Theory",
  type =         "Preprint",
  number =       "131",
  institution =  inst-QTP,
  address =      inst-QTP:adr,
  pages =        "21",
  year =         "1967",
  bibdate =      "Sun Mar 23 18:02:10 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  remark =       "Report is undated; probably 1967.",
}

@Article{Lowdin:1967:SPH,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Properties of the Hydrogen Bonds in Biochemistry
                 with Particular Reference to the Stability of the
                 Genetic Code",
  journal =      "Pontificaiae Academiae Scientiarum Scripta Varia",
  volume =       "31",
  number =       "??",
  pages =        "637--??",
  year =         "1967",
  CODEN =        "????",
  ISSN =         "????",
  bibdate =      "Fri Nov 17 09:37:46 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Semaine d'Etude sur les Forces Moleculaires.",
  acknowledgement = ack-nhfb,
}

@Article{Lindner:1968:ULB,
  author =       "Peter Lindner and Per-Olov L{\"o}wdin",
  title =        "Upper and Lower Bounds in Second-Order Perturbation
                 Theory and the {Uns{\"o}ld} Approximation",
  journal =      j-IJQC-SYMP,
  volume =       "2",
  number =       "S2",
  pages =        "161--173",
  year =         "1968",
  CODEN =        "IJQSAF",
  DOI =          "https://doi.org/10.1002/qua.560020717",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Nov 18 09:39:26 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib;
                 nhfb-allref.bib",
  abstract =     "Upper and lower bounds for the second-order energy in
                 the Schr{\"o}dinger perturbation theory are studied by
                 means of operator inequalities and inner projections.
                 It is shown that the variation problems associated with
                 Hylleraas's upper bound and Hirschfelder-Prager's lower
                 bound over a linear manifold have simple explicit
                 solutions. The approach is tested numerically on some
                 selected examples with good results.",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Chemistry Symposium",
  journal-URL =  "http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-461X",
}

@TechReport{Lowdin:1968:EPS,
  author =       "Per-Olov L{\"o}wdin and Osvaldo Goscinski",
  title =        "The Exchange Phenomenon, the Symmetric Group, and the
                 Spin Degeneracy Problem",
  type =         "Preprint",
  number =       "166",
  institution =  inst-QTP,
  address =      inst-QTP:adr,
  pages =        "iv + 99",
  year =         "1968",
  bibdate =      "Sun Mar 23 18:04:37 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  remark =       "Report is undated; probably 1968.",
}

@InProceedings{Lowdin:1968:MAB,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Bernard Pullman",
  booktitle =    "Molecular Associations in Biology: Proceedings of an
                 international symposium held in celebration of the 40th
                 anniversary of the Institut de biologie
                 physico-chimique (Foundation Edmond de Rothschild)
                 Paris, May 8--11, 1967",
  title =        "Molecular Associations in Biology --- {A} Brief
                 Summary",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xviii + 571",
  pages =        "539--549",
  year =         "1968",
  LCCN =         "QH506 .M718 1967",
  bibdate =      "Mon Dec 18 10:51:47 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@TechReport{Lowdin:1968:NOP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Non-Orthogonality Problem",
  type =         "Technical Report",
  number =       "TF 146",
  institution =  inst-QTP,
  address =      inst-QTP:adr,
  pages =        "21",
  day =          "1",
  month =        jun,
  year =         "1968",
  bibdate =      "Tue Dec 05 05:49:44 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  note =         "Published in \cite{Lowdin:1970:NP}.",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1968:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "4",
  pages =        "vii--viii",
  year =         "1968",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60388-3",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608603883",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
  xxnote =       "Check pages?? Why is there a gap viii--xiii??",
}

@TechReport{Lowdin:1968:SACa,
  author =       "P.-O. L{\"o}wdin",
  title =        "Some Aspects of the Correlation Problem and Possible
                 Extensions of the {Independent Particle Model}",
  type =         "Technical Report",
  number =       "TF 128",
  institution =  inst-QTP,
  address =      inst-QTP:adr,
  year =         "1968",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  note =         "Published in \cite{Lowdin:1968:SACb}.",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1968:SACb,
  author =       "P.-O. L{\"o}wdin",
  title =        "Some Aspects of the Correlation Problem and Possible
                 Extensions of the {Independent Particle Model}",
  journal =      j-ADV-CHEM-PHYS,
  volume =       "14",
  pages =        "283--340",
  year =         "1968",
  CODEN =        "ADCPAA",
  ISSN =         "0065-2385 (print), 1934-4791 (electronic)",
  ISSN-L =       "0065-2385",
  bibdate =      "Fri Dec 15 17:34:32 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  note =         "Proceedings of Frascati Summer School on the
                 Correlation Problem, 1967; Eds. R. Lefebvre and C.
                 Moser, Interscience, 1968. Also available as
                 \cite{Lowdin:1968:SACa}.",
  acknowledgement = ack-nhfb,
  fjournal =     "Advances in Chemical Physics",
  journalabr =   "Adv. Chem. Phys.",
  remark =       "Annual book series: no issue numbers.",
}

@InProceedings{Lowdin:1968:SAP,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "????",
  booktitle =    "Proceedings of the Israel Academy of Sciences
                 Symposium on Physico-Chemical Mechanism of
                 Carcinogenesis, Jerusalem",
  title =        "Some Aspects on the Possible Importance of the Reading
                 Mechanism of {DNA} in Carcinogenesis",
  publisher =    "????",
  address =      "????",
  pages =        "??--??",
  year =         "1968",
  LCCN =         "????",
  bibdate =      "Fri Nov 17 09:42:41 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InProceedings{Lowdin:1968:SAS,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Ram{\'o}n Carb{\'o}",
  booktitle =    "Proc. Girona Workshop on Quantum Chemistry",
  title =        "Some Aspects on the Structure and Present Situation of
                 Quantum Chemistry as Expressed at the {Girona
                 Workshop}",
  publisher =    pub-ELSEVIER,
  address =      pub-ELSEVIER:adr,
  pages =        "605--??",
  year =         "1968",
  ISBN =         "????",
  ISBN-13 =      "????",
  LCCN =         "????",
  bibdate =      "Mon Dec 18 10:50:59 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  xxnote =       "Year probably wrong: see \cite{Lowdin:1988:SAS}.",
}

@Article{Lowdin:1968:SCT,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Comments on the Treatment of Symmetry Properties
                 in Perturbation Theory",
  journal =      j-IJQC-SYMP,
  volume =       "2",
  number =       "S2",
  pages =        "137--150",
  year =         "1968",
  CODEN =        "IJQSAF",
  DOI =          "https://doi.org/10.1002/qua.560020715",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Nov 18 09:39:31 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib;
                 nhfb-allref.bib",
  abstract =     "The treatment of constants of motion and symmetry
                 properties in partitioning technique and perturbation
                 theory is briefly discussed. A constant of motion may
                 be characterized by a set of projection operators {QQ}
                 forming a resolution of the identity and leading to a
                 splitting of the Hilbert space into orthogonal and
                 non-interacting subspaces. It is shown that, in the
                 partitioning technique, it is sufficient to consider
                 only one such subspace at a time, which is a
                 considerable simplification. The treatment may be
                 extended to perturbation theory = 0 + V, and it is
                 shown that the unperturbed Hamiltonian 0 enters the
                 formalism only in the form of the reduced resolvents
                 occurring in ordinary perturbation theory. It is
                 emphasized that, even if the infinite-order expressions
                 are unique, the finite-order expansions in the
                 perturbation V are ambiguous, and the relation between
                 various forms is studied.",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Chemistry Symposium",
  journal-URL =  "http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-461X",
}

@Article{Lowdin:1968:SPT,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Studies in Perturbation Theory. {XIII}. {Treatment} of
                 Constants of Motion in Resolvent Method, Partitioning
                 Technique, and Perturbation Theory",
  journal =      j-IJQC,
  volume =       "2",
  number =       "6",
  pages =        "867--931",
  month =        nov,
  year =         "1968",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560020612",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Dec 15 17:45:41 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib;
                 nhfb-allref.bib",
  abstract =     "After a brief survey of some basic concepts in the
                 theory of linear spaces, the eigenvalue problem is
                 formulated in the resolvent technique based on the
                 introduction of a reference function and a complex
                 variable . This leads to a series of fundamental
                 concepts including the trial wave function, the
                 inhomogeneous equation, and finally the transition and
                 expectation values of the Hamiltonian, of which the
                 former renders a bracketing function for the energy. In
                 order to avoid the explicit limiting procedures in this
                 approach, the eigenvalue problem is then reformulated
                 in terms of the partitioning technique which, in turn,
                 leads to a closed form of infinite-order perturbation
                 theory.The eigenvalue problem is greatly simplified if
                 the Hamiltonian H has a constant of motion or has
                 symmetry properties characterized by the group G = {g},
                 and the question is now how these simplifications can
                 be incorporated into the partitioning technique and
                 into perturbation theory. In both cases, there exists a
                 set of projection operators {Qk} which lead to a
                 splitting of the Hilbert space into subspaces which
                 have virtually nothing to do with each other. It is
                 shown that, in the partitioning technique, it is
                 sufficient to consider one of these subspaces at a
                 time, and the results are then generalized to
                 perturbation theory. It turns out that the finite-order
                 expansions are no longer unique, and the commutation
                 rules connecting the various forms are derived. The
                 infinite-order results are finally presented in such a
                 form that they are later suitable for the evaluation of
                 upper and lower bounds to the energy eigenvalues.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@InProceedings{Lowdin:1968:UIP,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Ram{\'o}n Carb{\'o}",
  booktitle =    "Proc. Girona Workshop on Quantum Chemistry",
  title =        "The Use of Inner Projections and Rational
                 Approximations in the Future of Quantum Chemistry",
  publisher =    pub-ELSEVIER,
  address =      pub-ELSEVIER:adr,
  pages =        "1--??",
  year =         "1968",
  ISBN =         "????",
  ISBN-13 =      "????",
  LCCN =         "????",
  bibdate =      "Mon Dec 18 10:50:55 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Macintyre:1968:EED,
  author =       "Walter M. Macintyre and Per-Olov L{\"o}wdin",
  title =        "Electronic Energy of the {DNA} Replication Plane",
  journal =      j-IJQC-SYMP,
  volume =       "2",
  number =       "S2",
  pages =        "207--217",
  year =         "1968",
  CODEN =        "IJQSAF",
  DOI =          "https://doi.org/10.1002/qua.560020720",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Dec 15 18:31:20 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  abstract =     "Specific sets of atomic positions for the bases in the
                 four replication planes have been proposed. The
                 electronic energies corresponding to these structures
                 have been calculated by semiempirical SCF methods.",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Chemistry Symposium",
  journal-URL =  "http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-461X",
}

@Article{Berrondo:1969:POS,
  author =       "Manuel Berrondo and Per-Olov L{\"o}wdin",
  title =        "The Projection Operator for a Space Spanned by a
                 Linearly Dependent Set",
  journal =      j-IJQC,
  volume =       "3",
  number =       "6",
  pages =        "767--780",
  month =        nov,
  year =         "1969",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560030604",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  abstract =     "The explicit form of a projection operator constructed
                 from a linearly dependent set is found. The
                 relationships with canonical orthonormalization and
                 with the cofactor matrix of the set's metric matrix are
                 discussed. Similar expressions are obtained for the
                 inner projection of a positive definite operator using
                 a linearly dependent set.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1969:BRB,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Book Review: {{\booktitle{Selected scientific papers
                 of Egil A. Hylleraas}}. Edited by: John Midtdal, Harald
                 Wergeland, and Knut Thalberg. Published by: NTH Press,
                 Trondheim, Norway, 1968. Price: \$27 for both
                 volumes}",
  journal =      j-IJQC,
  volume =       "3",
  number =       "2",
  pages =        "246--246",
  month =        mar,
  year =         "1969",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560030211",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sun Oct 2 10:08:11 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1960.bib",
  note =         "See \cite{Midtdal:1968:SSPa}.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "12 Oct 2004",
}

@Article{Lowdin:1969:EPS,
  author =       "Per-Olov L{\"o}wdin and Osvaldo Goscinski",
  title =        "The Exchange Phenomenon, the Symmetric Group, and the
                 Spin Degeneracy Problem",
  journal =      j-IJQC,
  volume =       "4",
  number =       "S3b",
  pages =        "533--591",
  day =          "13--18",
  month =        jan,
  year =         "1969",
  CODEN =        "IJQSAF",
  DOI =          "https://doi.org/10.1002/qua.560040719",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 10 21:41:44 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1960.bib;
                 nhfb-allref.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Biology and Quantum Pharmacology.",
  abstract =     "A review is given of the development of the theory of
                 the exchange phenomenon, the permutation degeneracy,
                 the exclusion principle, the spin, the valence bond
                 functions, and related problems. The theory is based on
                 the use of the fundamental units of the group algebra,
                 and the solution to the eigenvalue problem is expressed
                 in terms of a super secular equation. The many-electron
                 problem is treated both in spin-free quantum mechanics
                 and with the spin included, and it is shown that both
                 methods lead to identical results. The various types of
                 antisymmetric wave functions of correct total spin are
                 studied, and alternative forms of the optimal solutions
                 are finally discussed.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "18 Jun 2009",
}

@Article{Lowdin:1969:I,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "3",
  number =       "S3a",
  pages =        "iv--x",
  day =          "13--18",
  month =        jan,
  year =         "1969",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560030702",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 10 21:34:51 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1960.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Atomic, Molecular, and Solid-state Theory and
                 Quantum Biology.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "18 Jun 2009",
}

@Article{Lowdin:1969:PCU,
  author =       "P.-O. L{\"o}wdin",
  title =        "Perturbation calculation of the upper and lower limits
                 of energy eigenvalues by partitioning technique",
  journal =      j-MAGY-FIZ-FOLY,
  volume =       "17",
  number =       "6",
  pages =        "515--540",
  year =         "1969",
  CODEN =        "MGFFAC",
  ISSN =         "0025-0104",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000)",
  acknowledgement = ack-nhfb,
  fjournal =     "Magyar Fizikai Foly{\'o}irat",
}

@Article{Lowdin:1969:PHF,
  author =       "P.-O. L{\"o}wdin",
  title =        "The projected {Hartree--Fock} method for the extension
                 of the independent particle model",
  journal =      j-MAGY-FIZ-FOLY,
  volume =       "17",
  number =       "6",
  pages =        "495--514",
  year =         "1969",
  CODEN =        "MGFFAC",
  ISSN =         "0025-0104",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000)",
  abstract =     "The physical understanding of the structure of atoms
                 molecules and nuclei is based on the independent
                 particle model and Slater determinants and the
                 Hartree--Fock method are extensively used as
                 mathematical tools within the model. The dilemma of the
                 symmetry of the Hartree--Fock method involving Slater
                 determinants is discussed. The projected Hartree--Fock
                 method is described and correlation problems are dealt
                 with",
  acknowledgement = ack-nhfb,
  fjournal =     "Magyar Fizikai Foly{\'o}irat",
}

@Article{Lowdin:1969:SAH,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Aspects of the Hydrogen Bond in Molecular
                 Biology",
  journal =      j-ANN-NY-ACAD-SCI,
  volume =       "158",
  number =       "1",
  pages =        "86--95",
  day =          "16",
  month =        may,
  year =         "1969",
  CODEN =        "ANYAA9",
  DOI =          "https://doi.org/10.1111/j.1749-6632.1969.tb56215.x",
  ISSN =         "0077-8923 (print), 1749-6632 (electronic)",
  ISSN-L =       "0077-8923",
  bibdate =      "Thu Dec 28 15:58:23 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MEDLINE database",
  acknowledgement = ack-nhfb,
  fjournal =     "Annals of the New York Academy of Sciences",
  journal-URL =  "http://www.nyas.org/Publications/Archive.aspx",
}

@Article{Lowdin:1969:SCP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some comments on the periodic system of the elements",
  journal =      j-IJQC,
  volume =       "3",
  number =       "S3a",
  pages =        "331--334",
  day =          "13--18",
  month =        jan,
  year =         "1969",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560030737",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 10 21:34:51 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1960.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Atomic, Molecular, and Solid-state Theory and
                 Quantum Biology.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "18 Jun 2009",
}

@Article{Gruninger:1970:CAA,
  author =       "John Gruninger and Yngve {\"O}hrn and Per-Olov
                 L{\"o}wdin",
  title =        "Comments on the Analysis of Atomic Correlation
                 Energies",
  journal =      j-J-CHEM-PHYS,
  volume =       "52",
  number =       "11",
  pages =        "5551--5554",
  day =          "1",
  month =        jun,
  year =         "1970",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1672824",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); nhfb-allref.bib",
  abstract =     "Analysis of correlation energies is advocated in terms
                 of average values of electronic kinetic energy,
                 electron-nuclear attraction energy, and
                 electron-electron repulsion energy, rather than pair
                 energies. Exploratory calculations on the two-electron
                 and three-electron isoelectronic sequences are
                 reported",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Lowdin:1970:CLB,
  author =       "Per-Olov L{\"o}wdin and Tiong-Koon Lim",
  title =        "Calculation of Lower Bounds To Energy Eigenvalues by
                 Reduced Density Matrices and the Representability
                 Problem",
  journal =      j-IJQC,
  volume =       "3",
  number =       "S3b",
  pages =        "697--702",
  day =          "13--18",
  month =        jan,
  year =         "1970",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560040733",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 10 21:41:44 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1960.bib;
                 nhfb-allref.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Biology and Quantum Pharmacology.",
  abstract =     "The expectation value of the Hamiltonian H for a
                 many-electron system may be expressed in terms of the
                 reduced second-order density matrix and the reduced
                 Hamiltonian K for a two-electron system. It may be
                 shown that the antisymmetric component HAS of the
                 original Hamiltonian is an outer projection of K with
                 respect to the antisymmetrizer O, so that HAS = OKO.
                 This result implies that the eigenvalues of K are, in
                 order, lower bounds to the eigenvalues of HAS, i.e. to
                 the eigenvalues of H associated with the antisymmetry
                 requirement. The expectation values of K are hence
                 often below the ground state energy of H, and the
                 eigenvalues may be used for the calculation of lower
                 bounds. Some numerical applications to atoms serve as
                 an illustration, and it is shown that the lower bounds
                 become worse as the number of electrons increases. The
                 implications for the representability problem are
                 discussed.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1970:NP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Nonorthogonality Problem",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "5",
  pages =        "185--199",
  year =         "1970",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60339-1",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  note =         "Contribution to {Professor Ivar Waller}'s 70-Year
                 Anniversary Volume. Earlier edition available as
                 technical report \cite{Lowdin:1968:NOP}.",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608603391",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
  tableofcontents = "I. Introduction 185 \\
                 II. Orthonormalization Procedures 187 \\
                 III. Further Aspects on the Nonorthogonality Problem
                 195 \\
                 IV. Calculations of Cohesive and Elastic Properties of
                 the Alkali Halides 196 \\
                 References 198",
  toc =          "I. Introduction 185;\\
                 II. Orthonormalization Procedures 187;\\
                 III. Further Aspects on the Nonorthogonality Problem
                 195;\\
                 IV. Calculations of Cohesive and Elastic Properties of
                 the Alkali Halides 196;\\
                 References 198",
}

@Article{Lowdin:1970:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "5",
  pages =        "xi--xii",
  year =         "1970",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60334-2",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608603342",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1970:RCP,
  author =       "P.-O. L{\"o}wdin and J.-L. Calais and G. Sperber and
                 M. Hayns and T. Ahlenius",
  title =        "Research on cohesive properties of solids in the
                 {Uppsala} quantum chemistry group",
  journal =      "4th Nordic solid state conference (abstracts)",
  volume =       "",
  number =       "",
  pages =        "17",
  year =         "1970",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000)",
  abstract =     "The following are presented: Study of the correlation
                 energy in alkali metals: The alternant molecular
                 orbital method is used in a set of exploratory
                 calculations of the cohesive energy of the lithium
                 metal. The occupation of the AMO's --- the shape of the
                 `Fermi surface' --- is discussed, in particular with
                 respect to its influence on the density and the
                 cohesive energy. The internal pressure in alkali
                 halides: The concept of internal pressure is treated
                 with reference to existing theoretical models and
                 calculations. A generalization of Borelius' equation of
                 state is proposed. Cohesive energies and elastic
                 constants of the silver halides: These are calculated
                 from free ion Hartree--Fock orbitals by means of
                 L{\"o}wdin's method. Construction of an orthonormal
                 basis set suitable for crystals: A combination of
                 various types of orthogonalization procedures is used
                 to construct an orthonormal set of LCAO functions",
  acknowledgement = ack-nhfb,
}

@InCollection{Lowdin:1970:SAR,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Tore Dalenius and Georg Karlsson and Sten Malmquist",
  booktitle =    "Scientists at Work: Festschrift in honour of {Herman
                 Wold}",
  title =        "Some Aspects on the Research Process in the Natural
                 Sciences",
  publisher =    pub-ALMQVIST-WIKSELLS,
  address =      pub-ALMQVIST-WIKSELLS:adr,
  bookpages =    "259",
  pages =        "112--135",
  year =         "1970",
  LCCN =         "Q180.5. .S36 1970",
  bibdate =      "Fri Nov 17 09:47:39 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1970:SPI,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some properties of inner projections",
  journal =      j-IJQC,
  volume =       "5",
  number =       "S4",
  pages =        "231--237",
  year =         "1970",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560050725",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  abstract =     "During the last decade, inner projections of
                 positive-definite operators have turned out to be of
                 essential importance for constructing lower bounds to
                 self-adjoint operators which are bounded from below.
                 They have been utilized to construct lower bounds to
                 energy eigenvalues, and to study the wave and reaction
                 operators in modern perturbation theory. In this paper,
                 a brief review is given of some of the basic properties
                 of the inner projections.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1971:I,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "5",
  number =       "S5",
  pages =        "xv--xvi",
  year =         "1971",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560050802",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1971:QCM,
  author =       "P.-O. L{\"o}wdin",
  title =        "Quantum Chemistry and Molecular Physics of Solids",
  journal =      "Colloq. Int. Cont. Nat. Rech. Sci.",
  volume =       "195",
  number =       "??",
  pages =        "207--226",
  year =         "1971",
  CODEN =        "????",
  ISSN =         "????",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  xxnote =       "Check journal: should it be ``Coll. Int. Centre Nat.
                 Rech. Sci. Paris'' as in \cite{Lowdin:1958:SDP}??",
}

@Unpublished{Lowdin:1971:SCT,
  author =       "P.-O. L{\"o}wdin",
  title =        "Some Comments on the Time-Dependent Variation
                 Principle",
  pages =        "????",
  month =        dec,
  year =         "1971",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  note =         "QTP notes. Published in \cite{Lowdin:1972:SCTb}.",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1971:SPI,
  author =       "P.-O. L{\"o}wdin",
  title =        "Some Properties of Inner Projections",
  journal =      j-IJQC-SYMP,
  volume =       "4",
  pages =        "231--237",
  year =         "1971",
  CODEN =        "IJQSAF",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Dec 18 11:05:26 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib; IEEE
                 INSPEC database (1968--2000); nhfb-allref.bib",
  abstract =     "Inner projections of positive-definite operators have
                 turned out to be of essential importance for
                 constructing lower bounds to self-adjoint operators
                 which are bounded from below. They have been utilized
                 to construct lower bounds to energy eigenvalues, and to
                 study the wave and reaction operators in modern
                 perturbation theory. A brief review is given of some of
                 the basic properties of the inner projections",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Chemistry Symposium",
  journal-URL =  "http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-461X",
}

@Article{Lowdin:1971:SPT,
  author =       "P.-O. L{\"o}wdin and O. Goscinski",
  title =        "Studies in Perturbation Theory. {XIV}. {Treatment} of
                 Constants of Motion, Degeneracies and Symmetry
                 Properties By Means of Multidimensional Partitioning",
  journal =      j-IJQC,
  volume =       "5",
  number =       "S5",
  pages =        "685--705",
  day =          "18--23",
  month =        jan,
  year =         "1971",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560050878",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Dec 15 18:31:34 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib;
                 nhfb-allref.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Atomic, Molecular and Solid-State Theory and Quantum
                 Biology.",
  abstract =     "The multidimensional partitioning technique is
                 reviewed, with particular emphasis on its formal
                 properties. The treatment of constants of motion by
                 this method coincides with a treatment given
                 previously, involving a modified resolvent in the
                 ordinary approach. On the other hand the present
                 method, upon expansion, coincides with Van Vleck's
                 perturbation theory for quasidegenerate states. Bounds
                 and estimates of the remainder related to Pade{\'e}
                 approximants obtained via inner projections are
                 discussed. The construction of effective-Hamiltonians
                 is considered, in particular the energy-independent non
                 self-adjoint ones.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Unpublished{Lowdin:1971:TECa,
  author =       "P.-O. L{\"o}wdin",
  title =        "Treatment of Exchange and Correlation Effects in
                 Crystals. {An} Introduction",
  pages =        "????",
  month =        dec,
  year =         "1971",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  note =         "QTP notes.",
  acknowledgement = ack-nhfb,
}

@Article{Laskowski:1972:TCM,
  author =       "Bernard Laskowski and Per-Olov L{\"o}wdin",
  title =        "Treatment of Constants of Motion in the Variation
                 Principle. {I}. {Symmetry} Properties of Variational
                 Wavefunctions",
  journal =      j-CHEM-PHYS-LETT,
  volume =       "16",
  number =       "1",
  pages =        "1--4",
  day =          "15",
  month =        sep,
  year =         "1972",
  CODEN =        "CHPLBC",
  DOI =          "https://doi.org/10.1016/0009-2614(72)80441-X",
  ISSN =         "0009-2614 (print), 1873-4448 (electronic)",
  ISSN-L =       "0009-2614",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000)",
  abstract =     "In connection with the Schr{\"o}dinger equation {$ H
                 \Psi = E \Psi $}, the approximate eigenfunctions {$
                 \Phi $} situated within a subspace {$M$} are studied by
                 means of the variation principle {$ \delta (H) = 0 $}.
                 It is shown that, if the Hamiltonian {$H$} has a normal
                 constant of motion {$ \Lambda $} or a group {$ G = (g)
                 $} of such constants, and if the subspace {$M$} is
                 stable under {$ \Lambda $} or the group {$ G = (g) $},
                 then variational solutions {$ \Phi $} show exactly the
                 same type of symmetry properties as the exact
                 eigenfunctions",
  acknowledgement = ack-nhfb,
  fjournal =     "Chemical Physics Letters",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00092614",
}

@Article{Lowdin:1972:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "6",
  pages =        "xi--xii",
  year =         "1972",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60540-7",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608605407",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@InProceedings{Lowdin:1972:RRU,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "????",
  booktitle =    "Selected Topics in Molecular Physics",
  title =        "Recent Research in the {Uppsala} \& {Florida Quantum
                 Theory Projects}",
  publisher =    "Verlag Chemie GmbH",
  address =      "????",
  pages =        "47--83",
  year =         "1972",
  LCCN =         "????",
  bibdate =      "Fri Nov 17 09:50:13 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  remark =       "Proceedings of the Seminar in Molecular Physics,
                 Ludwigsburg, 1970",
  xxaddress =    pub-IBM:adr,
  xxbooktitle =  "IBM Ludwigsburg Meeting Report",
  xxpublisher =  pub-IBM,
}

@TechReport{Lowdin:1972:SCTa,
  author =       "Per-Olov L{\"o}wdin and P. K. Mukherjee",
  title =        "Some Comments on the Time-Dependent Variation
                 Principle",
  type =         "Report",
  institution =  inst-QTP,
  address =      inst-QTP:adr,
  month =        jan,
  year =         "1972",
  bibdate =      "Sun Mar 23 19:08:42 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1972:SCTb,
  author =       "P.-O. L{\"o}wdin and P. K. Mukherjee",
  title =        "Some Comments on the Time-Dependent Variation
                 Principle",
  journal =      j-CHEM-PHYS-LETT,
  volume =       "14",
  number =       "1",
  pages =        "1--7",
  year =         "1972",
  CODEN =        "CHPLBC",
  ISSN =         "0009-2614 (print), 1873-4448 (electronic)",
  ISSN-L =       "0009-2614",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000)",
  abstract =     "The time-dependent variation principle due to Frenkel
                 is discussed from a new standpoint based on the
                 assumption that the norm of the variational function
                 Phi exists. By studying the expectation value of the
                 frequency operator $ j = i \delta / \delta t $, one may
                 introduce the conventional normalization and a `phase
                 normalization' through a special gauge transformation
                 leading to the result {$ J = (H - j) = 0 $}. It is
                 shown that the condition {$ \delta J = 0 $} leads to
                 Frenkel's variation principle, which is further
                 discussed by studying the error function {$ \Theta = (H
                 i \delta / \delta t) \Phi $}.",
  acknowledgement = ack-nhfb,
  fjournal =     "Chemical Physics Letters",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00092614",
}

@TechReport{Lowdin:1972:STN,
  author =       "P.-O. L{\"o}wdin",
  title =        "A Stability Theorem For Normal Operators of Importance
                 in Quantum Mechanics",
  type =         "Technical Report",
  number =       "TF 268",
  institution =  inst-QTP,
  address =      inst-QTP:adr,
  pages =        "9",
  day =          "1",
  month =        feb,
  year =         "1972",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
  remark =       "Submitted to Chem. Phys. Letters, but perhaps not
                 published there.",
}

@TechReport{Lowdin:1972:TECa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Treatment of Exchange and Correlation Effects in
                 Crystals. {An} Introduction",
  type =         "Report",
  institution =  inst-QTP,
  address =      inst-QTP:adr,
  pages =        "14",
  month =        jan,
  year =         "1972",
  bibdate =      "Sun Mar 23 19:10:04 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  remark =       "Typed on photoreproduction paper, so it must have been
                 intended for a conference publication. It begins ``The
                 organizers have kindly asked me to give a brief
                 introduction to this session.'' It seems to have been
                 published in entry \cite{Lowdin:1972:TECb}.",
}

@InProceedings{Lowdin:1972:TECb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Treatment of Exchange and Correlation Effects in
                 Crystals: Introductory Remarks",
  crossref =     "Herman:1972:CSS",
  pages =        "191--204",
  year =         "1972",
  DOI =          "https://doi.org/10.1007/978-1-4684-1977-1_16",
  bibdate =      "Mon Mar 24 11:23:59 MDT 2014",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4684-1977-1_16/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4684-1977-1",
  book-URL =     "http://www.springerlink.com/content/978-1-4684-1977-1",
}

@Article{Lowdin:1972:TSB,
  author =       "Per-Olov L{\"o}wdin and J.-L. Calais and M. R. Hayns",
  title =        "A Theoretical Study of the Behaviour of Solids under
                 High Pressure and the {Borelius}' Law, with
                 Applications to the Alkali Halides",
  journal =      j-J-NONMETALS,
  volume =       "1",
  number =       "1",
  pages =        "63--78",
  year =         "1972",
  CODEN =        "JNMTA3",
  ISSN =         "0090-3477",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000)",
  abstract =     "Borelius' equation of state has been derived from an
                 analysis of the relations between energy, pressure and
                 volume combined with a Pade approximant for the
                 pressure. A modification of this equation of state is
                 proposed. This modified expression, which is also
                 derived from a Pade approximant, is first tested by
                 comparison with the exact expressions that are obtained
                 for three model potentials, the Lennard-Jones, the
                 Morse, and the Born-Mayer potentials. It is also
                 compared with experimental high pressure data for four
                 alkali halides with quite good results",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of nonmetals",
  xxnote =       "Check author order?? Cannot find this journal in
                 University of California MELVYL periodicals catalog??",
}

@Article{Ahlenius:1973:SCC,
  author =       "Tor Ahlenius and Jean-Louis Calais and Per-Olov
                 L{\"o}wdin",
  title =        "Some Comments on the Construction of an Orthonormal
                 Set of {LCAO} Basis Functions for Crystals",
  journal =      j-J-PHYS-C,
  volume =       "6",
  number =       "11",
  pages =        "1896--1908",
  day =          "11",
  month =        jun,
  year =         "1973",
  CODEN =        "JPSOAW",
  DOI =          "https://doi.org/10.1088/0022-3719/6/11/016",
  ISSN =         "0022-3719",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000)",
  abstract =     "The non-orthogonality problem in the LCAO method for
                 crystals is reviewed and discussed with particular
                 emphasis on the properties of the eigenvalues of
                 certain overlap matrices. A pilot calculation is
                 carried out to demonstrate the numerical behaviour of
                 these eigenvalues and related quantities when the
                 atomic orbitals are of s- or p-type",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Physics C: Solid state physics",
  journal-URL =  "http://iopscience.iop.org/0022-3719",
}

@Article{Laskowski:1973:EGT,
  author =       "Bernard Laskowski and Jean-Louis Calais and Per-Olov
                 L{\"o}wdin and Piet V. Leuven",
  title =        "Electron Gas Test for the Alternant Molecular Orbital
                 Method",
  journal =      j-J-PHYS-C,
  volume =       "6",
  number =       "18",
  pages =        "2777--2787",
  day =          "18",
  month =        sep,
  year =         "1973",
  CODEN =        "JPSOAW",
  DOI =          "https://doi.org/10.1088/0022-3719/6/18/007",
  ISSN =         "0022-3719",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000)",
  abstract =     "The total energy of the uniform electron gas is
                 calculated in the alternant molecular orbital (AMO)
                 approximation for a cubic Fermi surface. This energy is
                 lower than the restricted Hartree--Fock energy for the
                 cubic Fermi surface for $ r_s \geq 9.27 \hbox {au} $.
                 This transition point is discussed from the point of
                 view of Adams' instability criterion",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Physics C: Solid state physics",
  journal-URL =  "http://iopscience.iop.org/0022-3719",
}

@InProceedings{Lowdin:1973:EMT,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "M. (Maurice) Marois",
  booktitle =    "From theoretical physics to biology, proceedings,
                 Versailles, June 21--26, 1971",
  title =        "Electronic Mobility and Transfer of Energy and
                 Momentum as Time-Dependent Processes",
  publisher =    "Karger",
  address =      "Basel, Switzerland; New York, NY, USA",
  bookpages =    "xv + 467",
  pages =        "145--146",
  year =         "1973",
  ISBN =         "3-8055-1578-2",
  ISBN-13 =      "978-3-8055-1578-8",
  LCCN =         "QH505 .I591 1971; QT34 I59 1971",
  bibdate =      "Fri Nov 17 09:59:56 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1973:O,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Obituary",
  journal =      j-IJQC,
  volume =       "7",
  number =       "1",
  pages =        "i--i",
  year =         "1973",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560070102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1973:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "7",
  pages =        "xi--xii",
  year =         "1973",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60557-2",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608605572",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1974:JMJ,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{Josef-Maria Jauch}, In Memoriam",
  journal =      "Eur. Phys. News",
  volume =       "12",
  number =       "7",
  pages =        "??--??",
  year =         "1974",
  CODEN =        "????",
  ISSN =         "????",
  bibdate =      "Fri Nov 17 10:03:28 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  xxnote =       "Cannot find this journal in University of California
                 MELVYL periodicals catalog?? I find a ``European
                 Nuclear Physics News'' in the U.S. Library of Congress,
                 but that started in 1990.",
}

@Article{Lowdin:1974:MOH,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{M}{\"a}niskan och hennes psyke i den moderna
                 kvantteorins v{\"a}rldsbild. ({Swedish}) [{Man} and his
                 Psyche in Modern Quantum Theory's World View]",
  journal =      "Forskning och Praktik",
  volume =       "6",
  number =       "??",
  pages =        "121--125",
  year =         "1974",
  CODEN =        "????",
  ISSN =         "????",
  bibdate =      "Fri Nov 17 10:04:17 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  language =     "Swedish",
  xxnote =       "Cannot find this journal in University of California
                 MELVYL periodicals catalog??",
}

@Article{Lowdin:1974:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "8",
  pages =        "xi--xii (??)",
  year =         "1974",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60056-8",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600568",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@InCollection{Lowdin:1975:EHF,
  author =       "Per-Olov L{\"o}wdin",
  title =        "2.2. An Extension of the {Hartree--Fock} Method to
                 Include Correlation Effects",
  crossref =     "Mehra:1975:SCP",
  chapter =      "14",
  pages =        "360--361",
  year =         "1975",
  bibdate =      "Thu Aug 23 12:33:12 2012",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1975:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "9",
  pages =        "ix--x",
  year =         "1975",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60037-4",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600374",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@TechReport{Lowdin:1975:SAOa,
  author =       "P.-O. L{\"o}wdin",
  title =        "Some Aspects on Objectivity and Reality in Modern
                 Science",
  type =         "Technical Report",
  number =       "TU 462",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  pages =        "59",
  year =         "1975",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  note =         "Also published as TF 427.",
  acknowledgement = ack-nhfb,
  remark =       "Cover says: ``Preliminary version --- not for
                 publication. To be presented in summary as a discussion
                 contribution at the Third International Humanities
                 Symposium organized by the Hellenic Society for
                 Humanistic Studies on the topic of `The Case of
                 Objectivity' in Greece, September 24--October 2,
                 1975.''",
}

@Unpublished{Lowdin:1975:SAOb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Aspects on Objectivity and Reality in Modern
                 Science",
  year =         "1975",
  bibdate =      "Fri Nov 17 10:05:21 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Lecture prepared for Greek Symposium on ``The Case of
                 Objectivity''.",
  acknowledgement = ack-nhfb,
}

@Unpublished{Lowdin:1976:FQC,
  author =       "P.-O. L{\"o}wdin",
  title =        "Future of Quantum Chemistry --- {A} Symposium in Honor
                 of {Per-Olov L{\"o}wdin}: {A} Collection of Short
                 Research Summaries of Participants",
  month =        sep,
  year =         "1976",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  note =         "QTP notes.",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1976:IAV,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Internationella aktiviteter vid {Kvantkemiska
                 Institutionen} och Forskargruppen vid {Uppsala
                 Universitet}. ({Swedish}) [{International} Activities
                 at the {Quantum Chemistry Institute} and Research Group
                 at {Uppsala University}]",
  journal =      "Universen, Uppsala Universitet informerar",
  volume =       "1/76",
  pages =        "??--??",
  year =         "1976",
  CODEN =        "????",
  ISSN =         "????",
  bibdate =      "Fri Nov 17 10:06:48 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  language =     "Swedish",
  xxnote =       "Check volume/number/pages?? Cannot find this journal
                 in University of California MELVYL periodicals
                 catalog??",
}

@TechReport{Lowdin:1976:QCU,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Quantum Chemistry at {Uppsala University}",
  type =         "Technical Report",
  number =       "TN 439",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  pages =        "??",
  year =         "1976",
  bibdate =      "Fri Nov 17 10:10:37 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Published in Uppsala University's 500th Anniversary
                 volume in math.-physical sciences.",
  acknowledgement = ack-nhfb,
}

@TechReport{Lowdin:1976:SAA,
  author =       "P.-O. L{\"o}wdin",
  title =        "Some Aspects on the {American--Swedish} Exchange in
                 Quantum Sciences, Particularly the {Uppsala--Florida}
                 Exchange Project",
  number =       "TU 470",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  pages =        "21",
  year =         "1976",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  note =         "Partners in Progress, A Chapter in the
                 American-Swedish Exchange of Knowledge.",
  acknowledgement = ack-nhfb,
  xxnote =       "How is this related to \cite{Lowdin:1977:U}.??",
}

@Article{Lowdin:1977:KCO,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Kvantkemi, cancer och {\aa}ldrande. ({Swedish})
                 [{Quantum} Chemistry, Cancer, and Aging]",
  journal =      "L{\"a}kartidning",
  volume =       "74",
  number =       "40",
  pages =        "3419--3421",
  day =          "5",
  month =        oct,
  year =         "1977",
  CODEN =        "LAKAA3",
  ISSN =         "0023-7205 (print), 1652-7518 (electronic)",
  ISSN-L =       "0023-7205",
  bibdate =      "Thu Dec 28 15:57:30 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MEDLINE database",
  acknowledgement = ack-nhfb,
  ajournal =     "Laekartidn.",
  language =     "Swedish",
  xxajournal =   "Sven. Laekartidn.",
  xxCODEN =      "SVLAAS",
  xxISSN =       "0371-439X",
  xxissn-l =     "0371-439X",
  xxjournal =    "Svensk L{\"a}kartidning",
}

@Article{Lowdin:1977:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "10",
  pages =        "xi--xii",
  year =         "1977",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60576-6",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608605766",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@TechReport{Lowdin:1977:QTT,
  author =       "P.-O. L{\"o}wdin",
  title =        "Quantum Theory as a Trace Algebra",
  volume =       "515",
  type =         "Technical Report",
  number =       "TF 515",
  institution =  inst-QTP,
  address =      inst-QTP:adr,
  pages =        "138",
  year =         "1977",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Lowdin:1977:SAA,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "A. Kastrup and N. Olsson",
  booktitle =    "Partners in Progress: A Chapter in the
                 {American--Swedish} Exchange of Knowledge",
  title =        "Some aspects on the {American--Swedish} exchange in
                 quantum sciences, particularly the {Uppsala--Florida}
                 exchange project",
  publisher =    "Swedish Council of America, North Central Publishing
                 Company",
  address =      "St. Paul, MN",
  pages =        "255--276",
  year =         "1977",
  ISBN =         "????",
  ISBN-13 =      "????",
  LCCN =         "????",
  bibdate =      "Mon Jun 12 08:06:49 2017",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  subject =      "Intellectual cooperation; Educational exchanges;
                 Educational exchanges.; Intellectual cooperation.;
                 International relations.; United States; Relations;
                 Sweden",
  tableofcontents = "Palme, O. / Introduction \\
                 Carlsson, S. / The history of emigration from Sweden to
                 America after 1860 \\
                 Fryckstedt, O. / The study of American literature at
                 the University of Uppsala \\
                 Elvius, Aina / Cooperation in astronomy \\
                 Theorell, H. / Swedish--American relations in
                 biochemistry \\
                 Ohlin, G. / Economics: the interchange of ideas between
                 Sweden and the United States \\
                 Lindstr{\"o}m, T. / Technical exchange in electric
                 power engineering \\
                 Luft, R. / U.S.A. and endocrinology \\
                 Jansson, B. / Models of man and nature: a tribute to H.
                 T. Odum \\
                 Philipson, L. / Genetics \\
                 Wickman, F. / American Swedish scientific exchange in
                 the field of geology \\
                 Borg, G. / Future research and development models: the
                 American influence on higher education \\
                 Nordenfalk, C. / Art history \\
                 Hellner, J. / American influence on Swedish research in
                 the field of private law \\
                 G{\^e}arding, L. / Mathematics and mathematicians in
                 the New World \\
                 Waldenstr{\"o}m, J. / Contacts with American medicine
                 \\
                 Fredga A. / Swedish and American research collaboration
                 in organic selenium chemistry \\
                 Bauer, G. / Medical care, teaching and research \\
                 Euler, U. von / Links of friendship and research
                 between American and Swedish scientists in the
                 biomedical field \\
                 R{\^e}anby, B. / Polymer science and technology \\
                 Hus{\'e}n, T. / Swedish scholarly contacts in
                 psychology and education \\
                 L{\"o}wdin, P. / Some aspects on the American--Swedish
                 exchange in quantum sciences, particularly the
                 Uppsala--Florida exchange project \\
                 Strandh, E. S. / Scientific brain picking \\
                 Segerstedt, T. / American and Swedish sociology \\
                 Sterky, H. / A television comes true",
  xxnote =       "Cited in J. Linderberg, ``{Yngve {\"O}hrn}, Scientist,
                 Leader, and Friend'', Advances in Quantum Chemistry
                 {\bf 35}, 1--19 (1999). How is this related to
                 \cite{Lowdin:1976:IAV}??",
}

@InProceedings{Lowdin:1977:SAI,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "W. O. (Winfred Oliver) Milligan",
  booktitle =    "American chemistry: bicentennial. Proceedings of the
                 twentieth conference held at the Shamrock Hilton Hotel,
                 Houston, Texas, November 8--10, 1976",
  title =        "Some Aspects on the Importance of Basic Research for
                 Human Welfare",
  volume =       "20",
  publisher =    "Robert A. Welch Foundation",
  address =      "Houston, TX, USA",
  bookpages =    "x + 275",
  pages =        "264--269",
  year =         "1977",
  LCCN =         "QD18.U6 A52 1977",
  bibdate =      "Mon Dec 18 10:52:16 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  series =       "Proceedings of the Robert A. Welch Foundation
                 conferences on chemical research",
  acknowledgement = ack-nhfb,
  xxISBN =       "none (checked on original volume)",
}

@Article{Lowdin:1977:SCM,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Current Models of Carcinogenesis",
  journal =      j-IJQC,
  volume =       "12",
  number =       "S4",
  pages =        "185--196",
  day =          "9--12",
  month =        jan,
  year =         "1977",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560120720",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Dec 15 18:29:14 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Biology and Quantum Pharmacology.",
  abstract =     "The various models of carcinogenesis related to the
                 genetic dogma are reviewed: the virus model, the
                 somatic mutation model, and the reading-error model.
                 Also the electronic theory of cancer is discussed in
                 this framework. It is emphasized that it is likely that
                 cancer is a disease caused by a disturbance in the
                 control of the cell differentiation, which may be
                 different depending on whether the disturbance is
                 caused by an external virus, radiation, or a chemical
                 compound. Even some current models of aging are being
                 briefly discussed in this connection.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "18 Jun 2009",
}

@TechReport{Lowdin:1977:STL,
  author =       "P.-O. L{\"o}wdin",
  title =        "Set Theory and Linear Algebra --- Some Mathematical
                 Tools to be Used in Quantum Theory",
  type =         "Technical Report",
  number =       "TN 490",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  year =         "1977",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
}

@Article{Calais:1978:CTQ,
  author =       "J. L. Calais and P.-O. L{\"o}wdin",
  title =        "Current Trends in Quantum Chemistry",
  journal =      "Kemisk Tidskrift",
  volume =       "90",
  number =       "11",
  pages =        "18--21",
  month =        "????",
  year =         "1978",
  ISSN =         "0039-6605",
  ISSN-L =       "0039-6605",
  bibdate =      "Mon Jun 10 15:21:57 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1978:I,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "14",
  number =       "4",
  pages =        "iii--iii",
  year =         "1978",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560140402",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1978:KFT,
  author =       "Per-Olov L{\"o}wdin and Jean-Louis Calais",
  title =        "Kvantkemi --- fr{\aa}n teori till praktik. ({Swedish})
                 [{Quantum} Chemistry -- From Theory to Practice]",
  journal =      j-SVENSK-KEMISK-TIDSKRIFT,
  volume =       "??",
  number =       "??",
  pages =        "??--??",
  year =         "1978",
  CODEN =        "KETIAL",
  ISSN =         "0039-6605",
  bibdate =      "Fri Nov 17 10:14:02 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Svensk kemisk tidskrift",
  language =     "Swedish",
  xxnote =       "Cannot find this journal in University of California
                 MELVYL periodicals catalog??",
}

@InCollection{Lowdin:1978:LTP,
  author =       "Per-Olov L{\"o}wdin",
  booktitle =    "Enciclopedia della Scienca e della Technica (EST)
                 Yearbook",
  title =        "{``Low Temperature Physics and Cosmic Microwave
                 Background Radiation''}: the 1978 {Nobel} prizes in
                 physics",
  publisher =    "Ed. Arnoldo Mondadow",
  address =      "Milano, Italy",
  pages =        "??--??",
  year =         "1978",
  ISBN =         "????",
  ISBN-13 =      "????",
  LCCN =         "????",
  bibdate =      "Mon Dec 18 11:01:06 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  xxnote =       "Check: Is Arnoldo Mondadow the editor, or the
                 publisher??",
}

@Article{Lowdin:1978:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "11",
  pages =        "xi--xii",
  year =         "1978",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60231-2",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608602312",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1978:QTT,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Quantum Theory as a Trace Algebra",
  journal =      j-IJQC-SYMP,
  volume =       "12",
  pages =        "197--266",
  year =         "1978",
  CODEN =        "IJQSAF",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Dec 18 10:38:13 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Not in symposium volumes 11--13. Only references in
                 Science Citation Index are to this paper, and
                 \cite{Lowdin:1982:AQT}. See addendum comment
                 \cite{Lowdin:1981:AQT}.",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Chemistry Symposium",
  journal-URL =  "http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-461X",
}

@Article{Lowdin:1979:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-IJQC,
  volume =       "16",
  number =       "1",
  pages =        "1--2",
  year =         "1979",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560160102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1980:IRN,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Introductory Remarks to {Nobel Symposium on Many-Body
                 Theory of Atomic Systems}",
  journal =      j-PHYSICA-SCRIPTA,
  volume =       "21",
  number =       "3--4",
  pages =        "229--234",
  month =        "????",
  year =         "1980",
  CODEN =        "PHSTBO",
  DOI =          "https://doi.org/10.1088/0031-8949/21/3-4/002",
  ISSN =         "0031-8949 (print), 1402-4896 (electronic)",
  ISSN-L =       "0031-8949",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  abstract =     "A general outline is given of the many-body theory of
                 atomic systems. Standard methods for solving the
                 Schr{\"o}dinger equation are reviewed",
  acknowledgement = ack-nhfb,
  fjournal =     "Physica Scripta",
  journal-URL =  "http://iopscience.iop.org/1402-4896/",
  journalabr =   "Phys Scr",
}

@Article{Lowdin:1980:MSCa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Molecular Structure Calculations",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "12",
  pages =        "263--316",
  year =         "1980",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60318-4",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608603184",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
  tableofcontents = "I. Importance of the Schr{\"o}dinger Equation 264
                 \\
                 II. Calculation of Approximate Eigenfunctions 266 \\
                 III. Computational Problems in Molecular Studies 286
                 \\
                 IV. Some Trends in Current Molecular Structure
                 Calculations 290 \\
                 V. Some Current Problems and Aspects for the Future 298
                 \\
                 Note Added in Proof 311 \\
                 References 312",
  toc =          "I. Importance of the Schr{\"o}dinger Equation 264;\\
                 II. Calculation of Approximate Eigenfunctions 266;\\
                 III. Computational Problems in Molecular Studies
                 286;\\
                 IV. Some Trends in Current Molecular Structure
                 Calculations 290;\\
                 V. Some Current Problems and Aspects for the Future
                 298;\\
                 Note Added in Proof 311;\\
                 References 312",
}

@InCollection{Lowdin:1980:MSCb,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Rita G. Lerner and George L. Trigg",
  booktitle =    "Encyclopedia of Physics",
  title =        "Molecular Structure Calculations --- {A} Brief
                 Review",
  publisher =    pub-AW,
  address =      pub-AW:adr,
  bookpages =    "xvi + 1157",
  pages =        "??--??",
  year =         "1980",
  ISBN =         "0-201-04313-0",
  ISBN-13 =      "978-0-201-04313-6",
  LCCN =         "QC5 .E495 1980",
  bibdate =      "Fri Nov 17 10:16:40 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Foreword by Walter Sullivan.",
  acknowledgement = ack-nhfb,
}

@InCollection{Lowdin:1980:OAI,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Kenichi Fukui and Bernard Pullman",
  booktitle =    "Horizons of quantum chemistry: proceedings of the
                 third International Congress of Quantum Chemistry, held
                 at Kyoto, Japan, October 29--November 3, 1979",
  title =        "Opening Address at the {3rd International Conference
                 in Quantum Chemistry in Kyoto}",
  publisher =    pub-REIDEL,
  address =      pub-REIDEL:adr,
  bookpages =    "xviii + 292",
  pages =        "xv--xviii",
  year =         "1980",
  ISBN =         "90-277-1105-4",
  ISBN-13 =      "978-90-277-1105-2",
  LCCN =         "QD462.A1 I49 1979",
  bibdate =      "Tue Dec 05 05:55:18 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1980:Pa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "12",
  pages =        "ix--x",
  year =         "1980",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60311-1",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608603111",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1980:Pb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-IJQC,
  volume =       "18",
  number =       "1",
  pages =        "1--1",
  year =         "1980",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560180102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1980:PIC,
  author =       "P.-O. L{\"o}wdin",
  title =        "{Proceedings of the 3rd International Congress of
                 Quantum Chemistry --- Contributed Papers. 1. Held at
                 Kyoto, Japan, 29 October 3 November 1979}",
  journal =      j-IJQC,
  volume =       "18",
  number =       "1",
  pages =        "1--1",
  month =        "????",
  year =         "1980",
  CODEN =        "IJQCB2",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@InProceedings{Lowdin:1980:SAH,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "????",
  booktitle =    "Proc. Eur. Acad. of Arts, Sciences, and Humanities",
  title =        "Some Aspects on the Human Mind in View of Modern
                 Quantum Chemistry",
  publisher =    "UNESCO",
  address =      "Paris, France",
  pages =        "102--??",
  year =         "1980",
  ISBN =         "????",
  ISBN-13 =      "????",
  LCCN =         "????",
  bibdate =      "Fri Nov 17 10:20:12 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Lowdin:1980:SCP,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Kenichi Fukui and Bernard Pullman",
  booktitle =    "Horizons of quantum chemistry: proceedings of the
                 third International Congress of Quantum Chemistry, held
                 at Kyoto, Japan, October 29--November 3, 1979",
  title =        "The Size-Consistency Problem for Large Molecules",
  publisher =    pub-REIDEL,
  address =      pub-REIDEL:adr,
  pages =        "193--195",
  year =         "1980",
  ISBN =         "90-277-1105-4",
  ISBN-13 =      "978-90-277-1105-2",
  LCCN =         "QD462.A1 I49 1979",
  bibdate =      "Tue Dec 05 05:55:16 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1981:AQT,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Addendum to {{\em `Quantum theory as a trace
                 algebra'}}",
  journal =      j-IJQC,
  volume =       "20",
  number =       "3",
  pages =        "775--776",
  month =        "????",
  year =         "1981",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560200317",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Dec 18 10:38:04 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  abstract =     "Comments on the author's article (see ibid., vol. 12,
                 no. 1, p. 197 (1978)) which has been discussed in
                 several summer institutes in Uppsala. It has become
                 evident to the author that there are many points which
                 need clarification, e.g., the concept of `operator
                 classes' introduced to study the fact that the
                 expectation values of all physical observables should
                 be real numbers",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
  xxnote =       "Check year in abstract: was 1977, but tentatively
                 corrected to 1978?? This paper has only a single
                 reference, to the author's article in International
                 Journal of Quantum Chemistry, vol. 12, supplement 1, p.
                 197 (1977). However, I cannot find that paper in
                 symposium volumes 11--13, nor in the regular journal
                 issues for 1976--1978. That paper is recorded here as
                 \cite{Lowdin:1978:QTT}, but that must be incorrect??
                 Was Technical Report QTP TF 515 \cite{Lowdin:1977:QTT}
                 intended, or was this published elsewhere??",
}

@Article{Lowdin:1981:Pa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "13",
  pages =        "ix--x",
  year =         "1981",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60290-7",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion; Science Citation Index database
                 (1980--2000)",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608602907",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1981:Pb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "14",
  pages =        "ix--x",
  year =         "1981",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60324-X",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion; Science Citation Index database
                 (1980--2000)",
  URL =          "http://www.sciencedirect.com/science/article/pii/S006532760860324X",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
  journalabr =   "Advan Quantum Chem",
}

@Article{Lowdin:1981:Pc,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-IJQC,
  volume =       "19",
  number =       "6",
  pages =        "973--973",
  year =         "1981",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560190602",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1981:PIC,
  author =       "P.-O. L{\"o}wdin",
  title =        "{Proceedings of the International Colloquium on the
                 Nature of Binding in Molecular Associations, Atom
                 Clusters, and Surface Phases Held a Sorrento, Italy
                 12--16 May 1980 --- Preface}",
  journal =      j-IJQC,
  volume =       "19",
  number =       "6",
  pages =        "973--973",
  month =        "????",
  year =         "1981",
  CODEN =        "IJQCB2",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1981:PISc,
  author =       "Per-Olov L{\"o}wdin and John R. Sabin",
  title =        "{Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology Held in Palm Coast,
                 Florida, 5--7 March 1981 --- Introduction}",
  journal =      j-IJQC-BIO-SYMP,
  volume =       "8",
  pages =        "vii--vii",
  year =         "1981",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Biology Symposium: Proceedings of the International
                 Symposium on Quantum Biology and Quantum Pharmacology",
}

@Article{Lowdin:1981:PISd,
  author =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn",
  title =        "{Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory, Collision Phenomena,
                 and Computational Quantum Chemistry Held in Flagler
                 Beach, Florida, 8--14 March 1981 --- Introduction}",
  journal =      j-IJQC-QC-SYMP,
  volume =       "15",
  pages =        "iii--iv",
  year =         "1981",
  CODEN =        "IJQSDI",
  ISSN =         "0161-3642",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1981:SDC,
  author =       "Per-Olov L{\"o}wdin and Jean Louis Calais and Jacques
                 M. Calazans",
  title =        "Simple Derivation of Conditions for Instability in the
                 {Hartree--Fock} and Projected {Hartree--Fock} Schemes",
  journal =      j-IJQC,
  volume =       "20",
  number =       "6",
  pages =        "1201--1215",
  month =        "????",
  year =         "1981",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560200605",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  abstract =     "The conditions for instability of solutions of
                 Hartree--Fock and projected Hartree--Fock equations are
                 derived in a form involving finite real symmetric
                 matrices. These conditions are also expressed in terms
                 of the Fock-Dirac density matrix, both at the
                 spin-orbital and at the orbital level. The particular
                 variations which give rise to the so-called singlet and
                 triplet instabilities are described",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Taurian:1981:SRP,
  author =       "Oscar E. Taurian and Per-Olov L{\"o}wdin",
  title =        "Some Remarks on the Projector Associated with the
                 Intersection of $2$ Linear Manifolds",
  journal =      j-ACTA-PHYS-ACAD-SCI-HUNG,
  volume =       "51",
  number =       "1--2",
  pages =        "5--12",
  month =        "????",
  year =         "1981",
  CODEN =        "APAHAQ",
  DOI =          "https://doi.org/10.1007/BF03155558",
  ISSN =         "0001-6705",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  abstract =     "The projector associated with the intersection of two
                 linear manifolds is derived by studying the properties
                 of the overlap matrix between the two sets spanning the
                 linear manifolds and its adjoint matrix. The problem is
                 reduced to an eigenvalue problem which-besides giving
                 an explicit solution to the intersection problem-gives
                 some additional information about the relationship
                 between the two linear manifolds: for instance, the
                 existence of `pairing regions' with partial overlap,
                 and\slash or mutually orthogonal regions with zero
                 overlap. Finally, an alternative approach is given
                 which may be better suited for programming purposes",
  acknowledgement = ack-nhfb,
  fjournal =     "Acta physica Academiae Scientiarum Hungaricae",
  journal-URL =  "http://link.springer.com/journal/12658",
  journalabr =   "Acta Phys Acad Sci Hung",
  xxtitle =      "Some remarks on the projector associated with the
                 intersection of two linear manifolds",
}

@Article{Lowdin:1982:AQT,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Axioms of Quantum Theory Formulated As a Trace
                 Algebra",
  journal =      j-IJQC,
  volume =       "21",
  number =       "1",
  pages =        "275--353",
  month =        "????",
  year =         "1982",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560210126",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1982:DFT,
  author =       "Per-Olov L{\"o}wdin and Jean-Louis Calais and Osvaldo
                 Goscinski",
  title =        "Density Functional Theory",
  journal =      j-IJQC,
  volume =       "21",
  number =       "2",
  pages =        "357--357",
  month =        "????",
  year =         "1982",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560210202",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1982:I,
  author =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "21",
  number =       "1",
  pages =        "1--2",
  year =         "1982",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560210102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1982:OSH,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On Operators, Superoperators, {Hamiltonians}, and
                 {Liouvillians}",
  journal =      j-IJQC-QC-SYMP,
  volume =       "22",
  number =       "S16",
  pages =        "485--560",
  day =          "1--13",
  month =        mar,
  year =         "1982",
  CODEN =        "IJQSDI",
  DOI =          "https://doi.org/10.1002/qua.560220847",
  ISSN =         "0161-3642",
  MRclass =      "82A15 (46N05 81C99)",
  MRnumber =     "84k:82039",
  MRreviewer =   "Koichiro Matsuno",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); MathSciNet database;
                 Science Citation Index database (1980--2000)",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Chemistry, Theory of Condensed Matter, and
                 Propagator Methods in the Quantum Theory of Matter.",
  abstract =     "In the quantum theory of matter, the wavefunctions {$
                 \Psi $} form a linear space {$ (\Psi) $} which serves
                 as a carrier space for the operators {$F$}
                 corresponding to physical observables as well as for
                 the system operators {$ \Gamma $} associated with
                 physical ensembles. The mappings of the operators {$T$}
                 in turn are called superoperators, and, of particular
                 importance are the Liouvillian and the superevolution
                 operator used in describing the time dependence of the
                 system operators {$ \Gamma (t) $}. The theory of such
                 superoperators is reviewed in some detail. By studying
                 the time dependence of expectation values ({$F$}) and
                 time-correlation functions ({$ F(t)G(t') $}), the
                 connection between the superoperator approach and the
                 conventional propagator method is explored. The
                 eigenvalue problem of the superoperators is treated,
                 and the principle importance of the superresolvents and
                 the practical usefulness of the partitioning technique
                 are employed. The `inner projections' of superoperators
                 with respect to both orthogonal projectors and skew
                 projectors are studied, and it is shown that they
                 render `rational approximations' of the quantities
                 involved which are always convergent. It is finally
                 shown that the partitioning technique may be used also
                 in solving the time-dependent Liouville equation",
  acknowledgement = ack-nhfb,
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1982:Pa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "15",
  pages =        "ix--x",
  year =         "1982",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60120-3",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608601203",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1982:Pb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "16",
  pages =        "ix--x",
  year =         "1982",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60349-4",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608603494",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1982:Pc,
  author =       "Per-Olov L{\"o}wdin and Jean-Louis Calais and Osvaldo
                 Goscinski",
  title =        "Preface",
  journal =      j-IJQC,
  volume =       "21",
  number =       "1",
  pages =        "215--215",
  year =         "1982",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560210119",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1982:PISc,
  author =       "P.-O. L{\"o}wdin and J. R. Sabin",
  title =        "{Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology Held at Palm Coast,
                 Florida, March 4--6, 1982 --- Introduction}",
  journal =      j-IJQC-BIO-SYMP,
  volume =       "9",
  pages =        "vii--vii",
  year =         "1982",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Biology Symposium: Proceedings of the International
                 Symposium on Quantum Biology and Quantum Pharmacology",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1982:PIW,
  author =       "P.-O. L{\"o}wdin and Y. {\"O}hrn",
  title =        "{Proceedings of the International Workshop on
                 Perturbation Theory at Large Order --- Held at the
                 Sheraton Palm Coast Resort Inn Flagler Beach, Florida
                 2--4 March 1981 --- Introduction}",
  journal =      j-IJQC,
  volume =       "21",
  number =       "1",
  pages =        "1--2",
  month =        "????",
  year =         "1982",
  CODEN =        "IJQCB2",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1982:PTP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Partitioning Technique, Perturbation Theory, and
                 Rational Approximations",
  journal =      j-IJQC,
  volume =       "21",
  number =       "1",
  pages =        "69--92",
  month =        "????",
  year =         "1982",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560210105",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  abstract =     "Instead of the Schr{\"o}dinger equation {$ H \Psi = E
                 \Psi $} subject to the boundary condition {$ (\phi
                 \bmod \Psi) = 1 $}, where $ \phi $ is a normalized
                 reference function in the Hilbert space, one studies
                 the inhomogeneous equation {$ (H - E) \Psi_E = a \phi
                 $}, where {$E$} is a complex variable, with the same
                 boundary condition, which gives {$ a = (\phi \bmod H
                 \bmod \Psi_E) - E = E_1 - E $}. Introducing the
                 projector {$ P = 1 - \bmod \phi)(\phi \bmod $} for the
                 complement to {$ O = \bmod \phi)(\phi \bmod $}, one
                 finds easily the explicit solution {$ \Psi_E = (1 - P H
                 / E)^{-1} \phi = (1 + T_E H) \phi $}, where {$ T_E = (E
                 - P H)^{-1P} = P(E - P H P)^{-1P} $} is the reduced
                 resolvent associated with the auxiliary Hamiltonian {$
                 H = P H P $}. The existence of these operators is
                 discussed. It is shown that, if the parameter {$E$} is
                 real in the `discrete part' of the spectrum to {$H$},
                 then {$E$} and {$ E_1 = (\phi \bmod H \bmod \Psi_E) =
                 (\phi \bmod H + H T_E / H \bmod \Phi) $} identical to
                 {$ f(E) $} bracket a true eigenvalue {$E$} satisfying
                 the relation {$ E = f(E) $}. The Newton--Raphson
                 solution to the equation {$ F(E) = E - f(E) = 0 $} is
                 related to the variation principle. Putting {$ H = H_0
                 + V $} and expanding the inverse {$ (E - P H_0 - P
                 V)^{-1} $} in terms of powers of {$V$} or {$ (V -
                 \alpha) $}, one gets various expansion relating to
                 finite-order perturbation theory. Exact expressions for
                 the ordinary wave and reaction operators are obtained.
                 If {$A$} is an arbitrary nonsingular operator and $ h =
                 \{ h_1, h_2, \ldots {}, h_n \} $ is a linearly
                 independent set, the inner projection {$
                 \innerprojection n = |h h|A 1 |h 1 h| $} is a rational
                 approximation to the operator {$A$} which converges
                 toward {$A$} when $n$ and the set $h$ becomes complete.
                 If {$A$} is positive (or has a finite negative part)
                 the convergence is from below. Applying this principle
                 to the partitioning technique, one gets rational
                 perturbation approximations instead of the standard
                 power series, similar to the Pad{\'e} approximants but
                 derived in a different way with the remainder term
                 under control. The method has been used to calculate
                 lower bounds to eigenvalues.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1982:PTW,
  author =       "P.-O. L{\"o}wdin and J. L. Calais and O. Goscinski",
  title =        "{Proceedings of the Tarfala Workshop --- Held in the
                 Tarfala Valley Lapland, Sweden, August 1978}",
  journal =      j-IJQC,
  volume =       "21",
  number =       "1",
  pages =        "215--215",
  month =        "????",
  year =         "1982",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560210119",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Taurian:1982:SRP,
  author =       "Oscar E. Taurian and Per-Olov L{\"o}wdin",
  title =        "Some remarks on the projector associated with the
                 intersection of two linear manifolds",
  journal =      j-ACTA-PHYS-ACAD-SCI-HUNG,
  volume =       "51",
  number =       "1--2",
  pages =        "5--12",
  year =         "1982",
  CODEN =        "APAHAQ",
  ISSN =         "0001-6705",
  MRclass =      "65F30",
  MRnumber =     "83i:65038",
  MRreviewer =   "K. Veseli{\'c}",
  bibdate =      "Thu Nov 16 11:51:44 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database",
  note =         "R. Gaspar dedicatory volume.",
  acknowledgement = ack-nhfb,
  fjournal =     "Acta physica Academiae Scientiarum Hungaricae",
  journal-URL =  "http://link.springer.com/journal/12658",
  journalabr =   "Acta Phys. Acad. Sci. Hungar.",
}

@Article{Froelich:1983:HFS,
  author =       "Piotr Froelich and Per-Olov L{\"o}wdin",
  title =        "On the {Hartree--Fock} Scheme for a Pair of Adjoint
                 Operators",
  journal =      j-J-MATH-PHYS,
  volume =       "24",
  number =       "1",
  pages =        "88--96",
  month =        jan,
  year =         "1983",
  CODEN =        "JMAPAQ",
  DOI =          "https://doi.org/10.1063/1.525605",
  ISSN =         "0022-2488 (print), 1089-7658 (electronic), 1527-2427",
  ISSN-L =       "0022-2488",
  MRclass =      "47A70 (49G20 81C12 81H10)",
  MRnumber =     "85b:47020b",
  MRreviewer =   "I. Gottlieb",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 http://jmp.aip.org/;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathphys1980.bib;
                 IEEE INSPEC database (1968--2000); MathSciNet database;
                 Science Citation Index database (1980--2000);
                 Zentralblatt Math database",
  ZMnumber =     "559.46037",
  abstract-1 =   "The paper deals with the question whether the
                 Hartree--Fock method may be extended to a general
                 linear many-particle operator $T$ of the form $$
                 T=T_{(0)}+\sum_iT_i+\sum_{i<j}T_{ij}+ \cdots $$ i.e.,
                 whether one can approximate the eigenvalues $C_k$ and
                 $D_{\ell}$ in $$ TC_k=\lambda_kC_k,\quad
                 T^+D_{\ell}=\mu_{\ell}D_{\ell},\quad
                 \mu_{\ell}=\lambda^*_{\ell} $$ by single Slater
                 determinants built up from one-particle functions or
                 spin orbitals in a meaningful way. It is shown that
                 such a generalization of the Hartree--Fock scheme could
                 be done by using the bivariational principle.",
  abstract-2 =   "A generalization of the Hartree--Fock scheme for an
                 arbitrary linear operator-and its adjoint-is derived by
                 using the bivariational principle. It is shown that, if
                 the system operator in the transition value is
                 approximated by two Slater determinants, it is
                 determined by a projector $\rho$, which corresponds to
                 a generalization of the conventional Fock-Dirac density
                 matrix, but which is no longer self-adjoint. The
                 effective one-particle operator then takes the same
                 form as in the conventional theory. The solution of the
                 stability problem for a pair of adjoint effective
                 operators is finally discussed. Numerical applications
                 are performed elsewhere",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Physics",
  journal-URL =  "http://jmp.aip.org/",
  journalabr =   "J Math Phys Ny",
  ZMreviewer =   "Ju. V. Kostarcuk",
}

@Article{Lowdin:1983:AQM,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Advances in Quantum Molecular Sciences --- {A} Tribute
                 to {Kenichi Fukui}",
  journal =      j-J-MOL-STRUCT,
  volume =       "103",
  pages =        "3--24",
  month =        aug,
  year =         "1983",
  CODEN =        "JMOSB4",
  ISSN =         "0022-2860 (print), 1872-8014 (electronic)",
  ISSN-L =       "0022-2860",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  note =         "Also as Theochem, vol. 12.",
  abstract =     "The authors presents a brief historical survey of the
                 development of various concepts in chemistry which has
                 led to the establishment of modern theoretical
                 chemistry and particularly quantum chemistry-to which
                 Professor Fukui has contributed so much",
  acknowledgement = ack-nhfb,
  annote-1 =     "Theochem volumes appear irregularly co-titled as
                 Journal of Molecular Structure volumes, sigh\ldots{}.",
  annote-2 =     "This volume is complete in a single issue, so no issue
                 number is assigned.",
  fjournal =     "Journal of Molecular Structure",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00222860",
}

@Article{Lowdin:1983:ECa,
  author =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael
                 Zerner",
  title =        "Editorial comments",
  journal =      j-IJQC,
  volume =       "23",
  number =       "1",
  pages =        "vii--vii",
  year =         "1983",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560230103",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1983:ECb,
  author =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael
                 Zerner",
  title =        "Editorial Comments",
  journal =      j-IJQC,
  volume =       "23",
  number =       "2",
  pages =        "vii--vii",
  year =         "1983",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560230202",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1983:ECc,
  author =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael
                 Zerner",
  title =        "Editorial comments",
  journal =      j-IJQC,
  volume =       "23",
  number =       "3",
  pages =        "v--v",
  year =         "1983",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560230302",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1983:ECd,
  author =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael
                 Zerner",
  title =        "Editorial comments",
  journal =      j-IJQC,
  volume =       "23",
  number =       "4",
  pages =        "xi--xi",
  year =         "1983",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560230403",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1983:I,
  author =       "Per-Olov L{\"o}wdin and Michael Zerner",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "24",
  number =       "S10",
  pages =        "vii--vii",
  day =          "14--16",
  month =        mar,
  year =         "1983",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560240702",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Jun 2009",
}

@Article{Lowdin:1983:P,
  author =       "Per-Olov L{\"o}wdin and Jean-Louis Calais and Osvaldo
                 Goscinski",
  title =        "Preface",
  journal =      j-IJQC,
  volume =       "23",
  number =       "1",
  pages =        "v--v",
  year =         "1983",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560230102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1983:PISc,
  author =       "P.-O. L{\"o}wdin and M. Zerner",
  title =        "{Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology --- Held at Palm
                 Coast, Florida, March 14--16, 1983 --- Introduction}",
  journal =      j-IJQC-BIO-SYMP,
  volume =       "10",
  pages =        "vii--vii",
  year =         "1983",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Biology Symposium: Proceedings of the International
                 Symposium on Quantum Biology and Quantum Pharmacology",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1983:SCE,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the {Sanibel} Coefficients in the Expansion of
                 Spin-Projected {Slater} Determinants",
  journal =      j-IJQC,
  volume =       "24",
  number =       "6",
  pages =        "729--745",
  month =        "????",
  year =         "1983",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560240615",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  abstract =     "Every Slater determinant {$D$} may be uniquely
                 analyzed in terms of spin components {$ D_l = O_l D $}
                 which are pure spin eigenfunctions, so that {$ S^2 D_l
                 = l(l + 1)D $}. Every component {$ D l = O_l D $} may
                 in turn be written as a sum of symmetric combinations
                 of Slater determinants, {$ T_k = (\alpha^{\mu - \kappa
                 } \beta^k \bmod \alpha^\kappa \beta^{\nu - \kappa })
                 $}, and the coefficients $ c_k^{(l)} $ in the expansion
                 {$ O_l D = \Sigma_{\kappa }c_{\kappa }^{(l)}T_{\kappa }
                 $} are known as the `Sanibel coefficients.' By using
                 the relation {$ S^2 D_{ l} = l(l + 1)D $}, a recursion
                 formula for the coefficient $ c_k^{(kl)} $ is derived,
                 which is then explicitly solved in the special case
                 when {$ S_z $} has the pure quantum number $ m = 0 $.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1983:SPP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Stability Problem of a Pair of Adjoint
                 Operators",
  journal =      j-J-MATH-PHYS,
  volume =       "24",
  number =       "1",
  pages =        "70--87",
  month =        jan,
  year =         "1983",
  CODEN =        "JMAPAQ",
  DOI =          "https://doi.org/10.1063/1.525604",
  ISSN =         "0022-2488 (print), 1089-7658 (electronic), 1527-2427",
  ISSN-L =       "0022-2488",
  MRclass =      "47A70 (47A10 49G20 81C12 81H10)",
  MRnumber =     "85b:47020a",
  MRreviewer =   "I. Gottlieb",
  bibdate =      "Sat Oct 29 18:19:18 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 http://jmp.aip.org/;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathphys1980.bib;
                 IEEE INSPEC database (1968--2000); MathSciNet database;
                 Science Citation Index database (1980--2000);
                 Zentralblatt Math database",
  URL =          "http://jmp.aip.org/resource/1/jmapaq/v24/i1/p70_s1",
  ZMnumber =     "541.47015",
  abstract =     "As an introduction, the eigenvalue problem for a
                 linear operator {$T$} having a discrete point spectrum
                 and a complete set of eigenfunctions is studied. The
                 bivariational principle for {$T$} and its adjoint
                 operator {$ T^{\dag } $} is derived, and the
                 biorthogonal properties of their eigenfunctions are
                 discussed. The main part of the paper is then concerned
                 with the problem whether these features can be extended
                 also to a general pair of adjoint operators, {$T$} and
                 {$ T^{\dag } $}, in which case the eigenvalue problem
                 is replaced by the more general stability problem. The
                 stability problem for a pair of adjoint operators ---
                 {$T$} and {$ T^{\dag } $} --- is first formulated in
                 terms of nonorthogonal projectors $ \phi $ and $
                 \phi^{\dag } $ --- which decompose these operators and
                 satisfy the commutation relations {$ T \phi = \phi T $}
                 and {$ T^{\dag } \phi^{\dag } = \phi^{\dag }T^{\dag }
                 $}. In the case of finite space, these skew-projectors
                 may be explicitly expressed in product forms derived
                 from the reduced Cayley--Hamilton equation for the
                 operator {$T$}. It is shown that, if the stable
                 subspaces defined by these projectors are properly
                 classified by their Segre characteristics, one may
                 explicitly derive the form of the projectors for the
                 irreducible stable subspaces associated with the
                 individual Jordan blocks of the so-called classical
                 canonical forms of the matrix representations of {$T$}
                 and {$ T^{\dag } $}. It is further shown that, in such
                 a case, the biorthonormality property of the
                 generalized eigenfunctions is still valid, and that a
                 bivariational principle may be derived. The extension
                 of these results to infinite spaces is finally briefly
                 discussed.",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Physics",
  journal-URL =  "http://jmp.aip.org/",
  journalabr =   "J Math Phys Ny",
  pagecount =    "18",
  ZMreviewer =   "Ch. Swartz",
}

@InProceedings{Lowdin:1983:SRD,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Tor Stubb",
  booktitle =    "Proceedings of the 60th Anniversary of the Swedish
                 Academy of Technical Sciences, Helsinki, Finland",
  title =        "Some Recent Developments in Theoretical Molecular
                 Biology in Relation to Some General Principles in
                 Physics and Chemistry",
  publisher =    "????",
  address =      "????",
  pages =        "??--??",
  year =         "1983",
  ISBN =         "????",
  ISBN-13 =      "????",
  LCCN =         "????",
  bibdate =      "Fri Nov 17 10:26:17 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InProceedings{Lowdin:1983:TBM,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Enrico Clementi and Ramaswamy H. Sarma",
  booktitle =    "Structure and dynamics, nucleic acids and proteins:
                 proceedings of the International Symposium on Structure
                 and Dynamics of Nucleic Acids and Proteins, held at the
                 University of California, San Diego at La Jolla,
                 September 5--9, 1982, under the auspices of the
                 International Society of Quantum Biology",
  title =        "On the Theoretical Background of Molecular Biology",
  publisher =    pub-ADENINE-PRESS,
  address =      pub-ADENINE-PRESS:adr,
  bookpages =    "xi + 487",
  pages =        "13--53",
  year =         "1983",
  ISBN =         "0-940030-04-7",
  ISBN-13 =      "978-0-940030-04-6",
  LCCN =         "QP620 .I57 1982; QU58 I576 1983",
  bibdate =      "Tue Dec 05 05:57:20 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Micha:1983:IP,
  author =       "David A. Micha and Per-Olov L{\"o}wdin",
  title =        "Introduction, {Part I}",
  journal =      j-IJQC,
  volume =       "24",
  number =       "S17",
  pages =        "1--1",
  day =          "3--12",
  month =        mar,
  year =         "1983",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560240802",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Atomic, Molecular and Solid-state Theory, Collision
                 Phenomena, and Computational Quantum Chemistry.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "9 Jul 2009",
}

@Article{Micha:1983:PIS,
  author =       "David A. Micha and Per-Olov L{\"o}wdin",
  title =        "{Proceedings of the International Symposium on Atomic,
                 Molecular and Solid-State Theory, Collision Phenomena,
                 and Computational Quantum Chemistry --- Held at Flagler
                 Beach, Florida, March 3--12, 1983 --- Introduction.
                 Part I}",
  journal =      j-IJQC-QC-SYMP,
  volume =       "17",
  pages =        "1--1",
  year =         "1983",
  CODEN =        "IJQSDI",
  ISSN =         "0161-3642",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Ohrn:1983:IPI,
  author =       "Yngve {\"O}hrn and Per-Olov L{\"o}wdin",
  title =        "Introduction, {Part II}",
  journal =      j-IJQC,
  volume =       "24",
  number =       "S17",
  pages =        "199--199",
  day =          "12",
  month =        mar,
  year =         "1983",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560240825",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Atomic, Molecular and Solid-state Theory, Collision
                 Phenomena, and Computational Quantum Chemistry.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Jun 2009",
}

@Article{Ohrn:1983:PIS,
  author =       "Yngve {\"O}hrn and Per-Olov {\"o}wdin",
  title =        "{Proceedings of the International Symposium on Atomic,
                 Molecular and Solid-State Theory, Collision Phenomena,
                 and Computational Quantum Chemistry --- Held at Flagler
                 Beach, Florida, March 3--12, 1983 --- Introduction.
                 Part II}",
  journal =      j-IJQC-QC-SYMP,
  volume =       "17",
  pages =        "199--199",
  year =         "1983",
  CODEN =        "IJQSDI",
  ISSN =         "0161-3642",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Book{Pullman:1983:NHQ,
  author =       "Bernard Pullman and Per-Olov L{\"o}wdin",
  title =        "New horizons of quantum chemistry: proceedings of the
                 Fourth International Congress of Quantum Chemistry,
                 held at Uppsala, Sweden, June 14--19, 1982",
  publisher =    pub-KLUWER,
  address =      pub-KLUWER:adr,
  pages =        "ix + 457",
  year =         "1983",
  ISBN =         "90-277-1526-2",
  ISBN-13 =      "978-90-277-1526-5",
  LCCN =         "QD462.A1 I57 1982",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  note =         "Held under the auspices of the International Academy
                 of Quantum Molecular Science.",
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Article{Lowdin:1984:EN,
  author =       "Per-Olov L{\"o}wdin and Jean-Louis Calais and Yngve
                 {\"O}hrn",
  title =        "Editor' {Note}",
  journal =      j-IJQC,
  volume =       "26",
  number =       "4",
  pages =        "i--i",
  month =        oct,
  year =         "1984",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560260402",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 12:45:45 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Lowdin:1984:PISc,
  author =       "P.-O. L{\"o}wdin and M. C. Zerner and J. R. Sabin",
  title =        "{Proceedings of the International Symposium on Atomic,
                 Molecular and Solid-State Theory, and Computational
                 Quantum Chemistry, Held at Flagler Beach, Florida,
                 March 1--15, 1984 --- Introduction}",
  journal =      j-IJQC-QC-SYMP,
  volume =       "18",
  pages =        "iii--iv",
  year =         "1984",
  CODEN =        "IJQSDI",
  ISSN =         "0161-3642",
  bibdate =      "Fri Dec 15 20:09:18 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1984:PISd,
  author =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner",
  title =        "{Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology Held at Palm Coast,
                 Florida, March 12--15, 1984 --- Introduction}",
  journal =      j-IJQC-BIO-SYMP,
  volume =       "11",
  pages =        "vii--viii",
  year =         "1984",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Biology Symposium: Proceedings of the International
                 Symposium on Quantum Biology and Quantum Pharmacology",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1984:SAR,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Aspects on the Relation Between the Natural
                 Sciences and the Human Mind --- An Introduction to a
                 Panel Discussion on the ``Origin of Life and Mind''",
  journal =      j-IJQC,
  volume =       "26",
  number =       "S11",
  pages =        "31--43",
  day =          "12--15",
  month =        mar,
  year =         "1984",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560260705",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 10 18:04:43 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib;
                 Science Citation Index database (1980--2000)",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Biology and Quantum Pharmacology",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "16 Apr 2008",
}

@Article{Lowdin:1985:ACL,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Approximate Calculation of Life-Times of Resonance
                 States in the Continuum from Real Stabilization
                 Graphs",
  journal =      j-IJQC,
  volume =       "27",
  number =       "4",
  pages =        "495--500",
  month =        "????",
  year =         "1985",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560270414",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  abstract =     "Simons (1981) has previously derived a simple formula
                 for the linewidth \Gamma of a resonance state in the
                 continuum from real stabilization graphs under the
                 assumption that the energy curves vary almost linearly
                 near the points of avoided crossing. This formula is
                 now rederived without this restricting assumption under
                 the condition that \Gamma is still small",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1985:CBR,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Connection Between the Resolvent Methods and
                 Partitioning Technique, Rational Approximations, and
                 Perturbation Theory",
  journal =      j-PHYSICA-SCRIPTA,
  volume =       "32",
  number =       "4",
  pages =        "261--262",
  month =        "????",
  year =         "1985",
  CODEN =        "PHSTBO",
  DOI =          "https://doi.org/10.1088/0031-8949/32/4/002",
  ISSN =         "0031-8949 (print), 1402-4896 (electronic)",
  ISSN-L =       "0031-8949",
  MRclass =      "81C12 (47A55)",
  MRnumber =     "87b:81038",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "Compendex database;
                 http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); MathSciNet database;
                 Science Citation Index database (1980--2000);
                 Zentralblatt Math database",
  ZMnumber =     "991.42064",
  abstract =     "In the resolvent methods for solving the
                 Schr{\"o}dinger equation, the eigenvalues are
                 represented by simple poles of the so-called Weinstein
                 function, whereas the eigenfunctions are represented by
                 expressions of the form $ \infty / \infty $. It is
                 shown that there exists a simple identity which permits
                 the evaluation of the eigenfunction, and which shows
                 the connection between the resolvent methods and
                 partitioning technique, rational approximations, and
                 perturbation theory. It is also shown that this
                 identity may be extended to the solution of the
                 Liouville equation",
  acknowledgement = ack-nhfb,
  classmath =    "*81-99 Quantum theory 47A55 Perturbation theory of
                 linear operators",
  fjournal =     "Physica Scripta",
  journal-URL =  "http://iopscience.iop.org/1402-4896/",
  journalabr =   "Phys. Scripta",
  journalabr-2 = "Phys Scr",
}

@TechReport{Lowdin:1985:CSA,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Change of Spectra Associated with Unbounded
                 Similarity Transformations of a Many-Particle
                 {Hamiltonian} and the Occurrence of Resonance States in
                 the Method of Complex Scaling. {Part I}: {General}
                 Theory",
  type =         "Technical Report",
  number =       "TN 803",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  year =         "1985",
  bibdate =      "Fri Nov 17 10:34:30 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Published in \cite{Lowdin:1988:CSA}.",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1985:Ia,
  author =       "P. O. L{\"o}wdin and N. Y. {\"O}hrn and J. R. Sabin
                 and M. C. Zerner",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "28",
  number =       "S12",
  pages =        "v--v",
  day =          "14--16",
  month =        mar,
  year =         "1985",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560280702",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Biology and Quantum Pharmacology.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Jun 2009",
}

@Article{Lowdin:1985:Ib,
  author =       "P. O. L{\"o}wdin and N. Y. {\"O}hrn and J. R. Sabin
                 and M. C. Zerner",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "28",
  number =       "S19",
  pages =        "1--2",
  day =          "18--23",
  month =        mar,
  year =         "1985",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560280802",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Biology and Quantum Pharmacology.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Jun 2009",
}

@Article{Lowdin:1985:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "17",
  pages =        "ix--x",
  year =         "1985",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60300-7",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion; Science Citation Index database
                 (1980--2000)",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608603007",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
  journalabr =   "Advan Quantum Chem",
}

@Article{Lowdin:1985:PISc,
  author =       "P.-O. L{\"o}wdin and N. Y. {\"O}hrn and J. R. Sabin
                 and M. C. Zerner",
  title =        "{Proceedings of the International Symposium on Atomic,
                 Molecular and Solid-State Theory, Scattering Problems,
                 Many-Body Phenomena, and Computational Quantum
                 Chemistry, Held at Marineland, Florida, March 18--23,
                 1985 --- Introduction}",
  journal =      j-IJQC-QC-SYMP,
  volume =       "19",
  pages =        "1--2",
  year =         "1985",
  CODEN =        "IJQSDI",
  ISSN =         "0161-3642",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1985:PISd,
  author =       "P.-O. L{\"o}wdin and N. Y. {\"O}hrn and J. R. Sabin
                 and M. C. Zerner",
  title =        "{Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology, Marineland, Florida,
                 March 14--16, 1985 --- Introduction}",
  journal =      j-IJQC-BIO-SYMP,
  volume =       "12",
  pages =        "v--v",
  year =         "1985",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Biology Symposium: Proceedings of the International
                 Symposium on Quantum Biology and Quantum Pharmacology",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1985:SAH,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Aspects on the {Hamiltonian} and {Liouvillian}
                 Formalism, the Special Propagator Methods, and the
                 Equation of Motion Approach",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "17",
  pages =        "285--334",
  year =         "1985",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60305-6",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion; Science Citation Index database
                 (1980--2000)",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608603056",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
  journalabr =   "Advan Quantum Chem",
  tableofcontents = "I. Introduction 285 \\
                 II. The Eigenvalue Problem for the Liouvillian in the
                 Hubert--Schmidt Theory 300 \\
                 III. Connection between the Binary Products in the
                 Operator Space 319 \\
                 Appendix A. Some Rules for Ket--Bra Operators 329 \\
                 Appendix B. The Order of Linear Independence of Certain
                 Operator Bases 330 \\
                 References 332",
  toc =          "I. Introduction 285;\\
                 II. The Eigenvalue Problem for the Liouvillian in the
                 Hubert--Schmidt Theory 300;\\
                 III. Connection between the Binary Products in the
                 Operator Space 319;\\
                 Appendix A. Some Rules for Ket--Bra Operators 329;\\
                 Appendix B. The Order of Linear Independence of Certain
                 Operator Bases 330;\\
                 References 332",
}

@InProceedings{Lowdin:1985:SCE,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "????",
  booktitle =    "Proc. UNESCO Conf., Bucharest, Romania, Dec. 1985",
  title =        "Some Comments on the Ethic and Moral Responsibilities
                 of the Research Scientists",
  publisher =    "UNESCO",
  address =      "????",
  pages =        "??--??",
  year =         "1985",
  ISBN =         "????",
  ISBN-13 =      "????",
  LCCN =         "????",
  bibdate =      "Fri Nov 17 10:39:48 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1985:TFY,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Twenty-five years of {Sanibel Symposia}: {A} brief
                 historic and scientific survey",
  journal =      j-IJQC,
  volume =       "28",
  number =       "S19",
  pages =        "19--37",
  day =          "18--23",
  month =        mar,
  year =         "1985",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560280805",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Biology and Quantum Pharmacology.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Jun 2009",
}

@Article{Lowdin:1985:YSS,
  author =       "P.-O. L{\"o}wdin",
  title =        "25 Years of {Sanibel Symposia} --- a Brief Historic
                 and Scientific Survey",
  journal =      j-IJQC-QC-SYMP,
  volume =       "19",
  pages =        "19--37",
  year =         "1985",
  CODEN =        "IJQSDI",
  DOI =          "https://doi.org/10.1002/qua.560280805",
  ISSN =         "0161-3642",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/s/slater-john-clarke.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
  remark =       "Notes that John C. Slater died on Sanibel Island on 25
                 July 1976. Enumerates the honorees for the Sanibel
                 Symposia. Notes that the proceedings of Sanibel 1963
                 (Hylleraas Symposium) were published in Reviews of
                 Modern Physics, vol. 35, no. 3, July 1963, and that the
                 proceedings of Sanibel 1965 (Mulliken Symposium) wer
                 published in the Journal of Chemical Physics, vol. 43,
                 no. 10 (part 2), November 15, 1965. The American
                 Institute of Physics was alarmed at the prospect of
                 publishing a large yearly conference proceedings, so
                 the International Journal of Quantum Chemistry was
                 founded.",
}

@Article{Lowdin:1986:A,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Announcement",
  journal =      j-IJQC,
  volume =       "29",
  number =       "2",
  pages =        "vii--viii",
  year =         "1986",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560290203",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1986:CSM,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Comments on Some Models of Carcinogenesis",
  journal =      j-IJQC,
  volume =       "30",
  number =       "S13",
  pages =        "311--317",
  day =          "6--8",
  month =        mar,
  year =         "1986",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560300832",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  abstract =     "This article serves as an introduction to a panel
                 discussion on the subject Models of Carcinogenesis at
                 the 1986 Sanibel Symposium on Quantum Biology and
                 Quantum Pharmacology, and it gives a brief review of
                 some of the current models. After listening to the
                 various presentations expressing quite diversified
                 views as to the cause of carcinogenesis at the 1977
                 Sanibel Symposium, I wrote a similar review [1] and
                 emphasized that some models seem more probable than the
                 others. The development during the years has shown,
                 however, that cancer is such a multifaceted disease
                 that almost all of the models discussed have turned out
                 to have some relevance.",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1986:GBT,
  author =       "Per-Olov L{\"o}wdin",
  title =        "A Generalization of {Brillouin}'s Theorem and the
                 Stability Conditions in the Quantum-Mechanical
                 Variation Principle in the Case of General Trial Wave
                 Functions",
  journal =      j-PROC-INDIAN-ACAD-SCI-CHEM-SCI,
  volume =       "96",
  number =       "3--4",
  pages =        "121--126",
  month =        "????",
  year =         "1986",
  CODEN =        "PIAADM",
  ISSN =         "0253-4134",
  ISSN-L =       "0253-4134",
  MRclass =      "81H10 (81C15)",
  MRnumber =     "87m:81213",
  MRreviewer =   "I. A. Sakmar",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); MathSciNet database;
                 Science Citation Index database (1980--2000)",
  note =         "Basu Dedicatory Volume, Ed. D. Mukherjee.",
  abstract =     "In connection with the quantum-mechanical variation
                 principle, it is shown that the Brillouin theorem and
                 the stability conditions usually associated with the
                 Hartree--Fock scheme in the many-electron theory may be
                 generalized to the case of arbitrary trial functions
                 depending on a set of linear or non-linear complex
                 parameters",
  acknowledgement = ack-nhfb,
  fjournal =     "Proceedings of the Indian Academy of Sciences.
                 Chemical sciences.",
  journalabr =   "Proc. Indian Acad. Sci. Chem. Sci.",
}

@Article{Lowdin:1986:Ia,
  author =       "P. O. L{\"o}wdin and N. Y. {\"O}hrn and J. R. Sabin
                 and M. C. Zerner",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "30",
  number =       "S13",
  pages =        "v--v",
  day =          "6--8",
  month =        mar,
  year =         "1986",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560300802",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Biology and Quantum Pharmacology.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Jun 2009",
}

@Article{Lowdin:1986:Ib,
  author =       "P. O. L{\"o}wdin and N. Y. {\"O}hrn and J. R. Sabin
                 and M. C. Zerner",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "30",
  number =       "S20",
  pages =        "1--2",
  day =          "10--15",
  month =        mar,
  year =         "1986",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560300702",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Supplement: Proceedings of the International Syposium
                 on Atomic, Molecular, and Solid-State Theory,
                 Scattering Problems, Many Body Phenomena, and
                 Computational Quantum Chemistry.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@InCollection{Lowdin:1986:MDM,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Jean Maruani",
  booktitle =    "Molecules in physics, chemistry, and biology, (Paris,
                 1986)",
  title =        "The mathematical definition of a molecule and
                 molecular structure",
  volume =       "2 (Physical aspects of molecular systems)",
  publisher =    pub-KLUWER,
  address =      pub-KLUWER:adr,
  pages =        "3--60",
  year =         "1986",
  ISBN =         "90-277-2596-9 (vol. 1); 90-277-2617-5 (set: vol.
                 1--3)",
  ISBN-13 =      "978-90-277-2596-7 (vol. 1); 978-90-277-2617-9 (set:
                 vol. 1--3)",
  MRclass =      "81G55 (81-02 81B99 92A40)",
  MRnumber =     "1 011 949",
  bibdate =      "Thu Nov 16 11:51:44 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database",
  series =       "Topics in molecular organization and engineering",
  acknowledgement = ack-nhfb,
  seriesabr =    "Topics Molecular Organ. Engrg.",
}

@InProceedings{Lowdin:1986:NDQ,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Larry L. Hench and Donald R. Ulrich",
  booktitle =    "Science of Ceramic Chemical Processing: Proceedings of
                 the Second International Conference on Ultrastructure
                 Processing of Ceramics, Glasses, and Composites, held
                 February 25--March 1, 1985 in Palm Coast, Florida",
  title =        "New Directions in Quantum Chemical Calculations ---
                 Particularly as to New Materials",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  bookpages =    "xxi + 594",
  pages =        "577--??",
  year =         "1986",
  ISBN =         "0-471-82645-6",
  ISBN-13 =      "978-0-471-82645-3",
  LCCN =         "TP785 .U46 1985",
  bibdate =      "Fri Nov 17 10:35:24 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  price =        "US\$54.00",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1986:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "18",
  pages =        "vii--viii",
  year =         "1986",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60046-5",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600465",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1986:PISc,
  author =       "P.-O. L{\"o}wdin and N. Y. {\"O}hrn and J. R. Sabin
                 and M. C. Zerner",
  title =        "{Proceedings of the International Symposium on Atomic,
                 Molecular and Solid-State Theory, Scattering Problems,
                 Many-Body Phenomena, and Computational Quantum
                 Chemistry, Held at Marineland, Florida, March 10--15,
                 1986 --- Introduction}",
  journal =      j-IJQC-QC-SYMP,
  volume =       "20",
  pages =        "1--2",
  year =         "1986",
  CODEN =        "IJQSDI",
  ISSN =         "0161-3642",
  bibdate =      "Fri Dec 15 18:12:34 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1986:PISd,
  author =       "P.-O. L{\"o}wdin and N. Y. {\"O}hrn and J. R. Sabin
                 and M. C. Zerner",
  title =        "{Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology --- Held at
                 Marineland, Florida, March 6--8, 1986 ---
                 Introduction}",
  journal =      j-IJQC-BIO-SYMP,
  volume =       "13",
  pages =        "v--v",
  year =         "1986",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  bibdate =      "Fri Dec 15 18:12:33 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Biology Symposium: Proceedings of the International
                 Symposium on Quantum Biology and Quantum Pharmacology",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1986:RAW,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Remarks about the wave-function representability of
                 the first-order reduced density matrices",
  journal =      j-IJQC,
  volume =       "30",
  number =       "S20",
  pages =        "769--771",
  day =          "10--15",
  month =        mar,
  year =         "1986",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560300767",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Dec 18 11:05:42 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib; IEEE
                 INSPEC database (1968--2000); Science Citation Index
                 database (1980--2000)",
  note =         "Supplement: Proceedings of the International Syposium
                 on Atomic, Molecular, and Solid-State Theory,
                 Scattering Problems, Many Body Phenomena, and
                 Computational Quantum Chemistry.",
  abstract =     "It is pointed out that, if {$ (\Gamma_{\gamma }) $} is
                 the set of {$N$ th}-order density matrices associated
                 with a given first-order reduced density matrix $
                 \gamma = \gamma (x_1 \bmod x'_1) $, then gamma is
                 wave-function representable, if and only if there is at
                 least one {$ \Gamma_{\gamma } $} for which one has {$
                 \mu = \hbox {Tr}(\Gamma_{\gamma } - \Gamma_{\gamma }^2)
                 = 0 $}.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Lowdin:1986:SAQa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the State of the Art of Quantum Chemistry",
  journal =      j-IJQC,
  volume =       "29",
  number =       "5",
  pages =        "1651--1683",
  month =        may,
  year =         "1986",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560290552",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  note =         "Proceedings of the 5th International Congress of
                 Quantum Chemistry (ICQC), August 18--24, 1985,
                 Montr{\'e}al, Canada, Part IV.",
  abstract =     "A brief general survey of the current state of the art
                 of quantum chemistry is given with some aspects also
                 towards the future. It is emphasized that, if one wants
                 to incorporate such concepts as temperature, entropy,
                 and free energy into quantum chemistry, it is necessary
                 to make a transition from pure quantum mechanics based
                 on wavefunctions to the more general quantum statistics
                 based on density matrices and system operators. In
                 addition to the Schr{\"o}dinger equations, one obtains
                 the Liouville equations, and it is shown that both the
                 time-dependent and the time-independent equations may
                 be solved in both cases by using analogous
                 Hilbert-space methods. Some of the methods for solving
                 the time-independent eigenvalue problems are reviewed,
                 and the need for giant number crunchers in this
                 connection are discussed. It is shown that the
                 resolvent methods combined with the inner projection
                 technique for the calculations provide a powerful tool
                 for handling the eigenvalue problems in the future in
                 both the Hamiltonian and Liouvillian formalisms. It is
                 stressed that, by going over to supercomputers, one may
                 gain a factor of 100, and that one may gain another
                 factor of 100 by going over to more powerful
                 theoretical methods; however, for programming reasons,
                 it will take a long time before one can reach the
                 combined efficiency factor $ 100 \times 100 $.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
  remark =       "Proceedings of the 5th International Congress of
                 Quantum Chemistry (ICQC), August 18--24, 1985,
                 Montr{\'e}al, Canada, Part III, was published in the
                 International Journal of Quantum Chemistry, vol. 29,
                 no. 4, 1986, eds. N. Yngve {\"O}hrn, John R. Sabin, and
                 Michael C. Zerner.",
}

@InProceedings{Lowdin:1986:SAQb,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Sidney W. Fox",
  booktitle =    "Self-Organization: Principles in Science, Events in
                 Society. Sonesta Beach Hotel, Key Biscayne, Florida,
                 November 1--3, 1984",
  title =        "Some Aspects on Quantum Theory, Consciousness of the
                 Mind and Free Will",
  publisher =    pub-ADENINE-PRESS,
  address =      pub-ADENINE-PRESS:adr,
  pages =        "1--3",
  year =         "1986",
  ISBN =         "0-940030-13-6",
  ISBN-13 =      "978-0-940030-13-8",
  LCCN =         "????",
  bibdate =      "Tue Dec 05 05:57:17 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  xxpages =      "23--34",
}

@Article{Lowdin:1986:SCM,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Comments on the Method of Complex Scaling to Find
                 Physical Resonance States",
  journal =      j-IJQC,
  volume =       "30",
  number =       "S20",
  pages =        "743--748",
  day =          "10--15",
  month =        mar,
  year =         "1986",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560300763",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Dec 18 11:05:44 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  note =         "Supplement: Proceedings of the International Syposium
                 on Atomic, Molecular, and Solid-State Theory,
                 Scattering Problems, Many Body Phenomena, and
                 Computational Quantum Chemistry.",
  abstract =     "Some basic features of the method of complex scaling
                 are briefly reviewed. This method is associated with a
                 similarity transformation {$ H = U H U^{-1} $}, in
                 which the many-particle Hamiltonian H loses its
                 self-adjoint character. In connection with the
                 eigenvalue problems for {$H$} and {$H$}, one has
                 formally the relations {$ \Psi = U \Psi $} and {$ E = E
                 $}. However, since the proper boundary conditions have
                 to be satisfied, the spectrum {$ (E) $} may still be
                 subject to change: even if some eigenvalues are
                 persistent {$ (E = E) $}, others may be lost, and new
                 eigenvalues may occur also in the complex plane. It is
                 pointed out that these changes are related to the fact
                 that the `dilatation operator' {$U$} is an unbounded
                 operator, and that the eigenfunctions involved are
                 transformed not only within the ordinary {$ L^2 $}
                 Hilbert space, but also out of and into this space.
                 Reference to a more complete treatment is given",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@InProceedings{Lowdin:1986:SCR,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "R. Daudel",
  booktitle =    "Proc. 5th Int. Conf. ``Innovations and Society'', Dec.
                 1985, Bucharest, Romania",
  title =        "Some Comments on the Reduction of the Natural Sciences
                 and on the Relation between Mind and Matter and Between
                 Natural and Artificial Intelligence",
  publisher =    "????",
  address =      "Paris, France",
  pages =        "??--??",
  year =         "1986",
  ISBN =         "????",
  ISBN-13 =      "????",
  LCCN =         "????",
  bibdate =      "Fri Nov 17 10:38:52 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Jhon:1987:SRC,
  author =       "Mu Shik Jhon and Per-Olov L{\"o}wdin",
  title =        "Some Remarks on Certain Magnetic Properties of Water
                 in the Study of Cancer",
  journal =      j-IJQC,
  volume =       "32",
  number =       "S14",
  pages =        "9--14",
  day =          "14",
  month =        mar,
  year =         "1987",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560320805",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 10 18:41:53 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib; IEEE
                 INSPEC database (1968--2000); Science Citation Index
                 database (1980--2000)",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Biology and Quantum Pharmacology",
  abstract =     "In the study of cancer as a complicated disease caused
                 by many combinations of various factors, it may be of
                 importance to consider also any possible changes of the
                 water structure in the environment of the malignant
                 cells. The occurrence of such changes has been
                 established experimentally, for example, by a study of
                 the magnetic properties of water by nuclear magnetic
                 resonance (NMR) spectra. It has been found that the
                 protons in the water surrounding malignant cells have a
                 much longer spin-lattice relaxation time than the
                 protons in the water around normal cells. This
                 indicates that the water molecules in tumor cells are
                 less structured and able to move more freely than in
                 normal tissues, where, due to the effect of hydrogen
                 bonding, water occurs mainly as five- or six-membered
                 rings. This prolongation of the proton spin-lattice
                 time may be an important factor in cancer, but further
                 studies are necessary before one can decide with
                 certainty whether it would be possible to use this
                 effect to diagnose malignant transformations at an
                 early stage. It is suggested that changes in the
                 magnetic properties of water in a malignant tumor
                 during chemotherapy and other treatments be monitored
                 as control tools.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "16 Apr 2008",
}

@Article{Kong:1987:SPT,
  author =       "Young Shik Kong and Mu Shik Jhon and Per-Olov
                 L{\"o}wdin",
  title =        "Studies on Proton Transfers in Water Clusters and
                 {DNA} Base Pairs",
  journal =      j-IJQC,
  volume =       "32",
  number =       "S14",
  pages =        "189--209",
  day =          "14",
  month =        mar,
  year =         "1987",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560320820",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 10 18:41:53 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib; IEEE
                 INSPEC database (1968--2000); Science Citation Index
                 database (1980--2000)",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Biology and Quantum Pharmacology",
  abstract =     "Studies on the proton transfers in water clusters
                 (H$_2$O)$_n$ $ (n = 2, 3, 4, 5, 6) $, and in DNA base
                 pairs, adenine-thymine base pair, and guanine-cytosine
                 base pair, have been done by using the potential
                 functions of polarization model for water and ab initio
                 SCF method with STO-3G basis set for base pairs,
                 respectively",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
  onlinedate =   "16 Apr 2008",
}

@Article{Lowdin:1987:CCQ,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Citation Classic --- {Quantum Theory of Many-Particle
                 Systems. 1. Physical Interpretations by Means of
                 Density-Matrices, Natural Spin-Orbitals, and
                 Convergence Problems in the Method of Configurational
                 Interaction, Phys. Rev. {\bf 97}:1474--1489, 1955}",
  journal =      j-CURR-CONTENTS-PHYS-CHEM-EARTH-SCI,
  volume =       "40",
  number =       "??",
  pages =        "20--20",
  day =          "5",
  month =        oct,
  year =         "1987",
  ISSN =         "0163-2574",
  ISSN-L =       "0163-2574",
  bibdate =      "Fri Jun 16 12:09:21 2017",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  note =         "Letter dated 30 June 1987.",
  URL =          "http://garfield.library.upenn.edu/classics1987/A1987K083700001.pdf",
  acknowledgement = ack-nhfb,
  fjournal =     "Current Contents: Physical, Chemical \& Earth
                 Sciences",
  journalabr =   "Cc/Phys Chem Earth Sci",
  remark =       "L{\"o}wdin reports here that the first successful
                 application of natural spin-orbitals (NSOs) introduced
                 in his 1955 classic paper was in reference
                 \cite{Lowdin:1956:NOQ}, but that the idea was slow to
                 be adopted by others until the appearance of Davidson's
                 book \cite{Davidson:1976:RDM} more than two decades
                 later. The journal editors report that {\em Science
                 Citation Index\/} records citations of the 1955 article
                 in more than 770 publications. A search in the {\em Web
                 of Science\/} database on 16 June 2017 found a report
                 of 2561 citations of the 1955 article. However, the
                 bibliographer (NHFB) can attest to the fact that NSOs
                 were in common use in configuration-interaction
                 calculations at the Quantum Theory Project already in
                 the late 1960s.",
}

@Article{Lowdin:1987:I,
  author =       "P. O. L{\"o}wdin and N. Y. {\"O}hrn and J. R. Sabin
                 and M. C. Zerner",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "32",
  number =       "S21",
  pages =        "1--1",
  day =          "12",
  month =        mar,
  year =         "1987",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560320702",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 10 18:48:38 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Chemistry, Solid-State Theory, and
                 Computational Methods",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Lowdin:1987:PISa,
  author =       "P.-O. L{\"o}wdin and N. Y. {\"O}hrn and J. R. Sabin
                 and M. C. Zerner",
  title =        "{Proceedings of the International Symposium on Quantum
                 Chemistry, Solid-State Theory, and Computational
                 Methods Held at Marineland, Florida, March 12--21, 1987
                 --- Introduction}",
  journal =      j-IJQC-QC-SYMP,
  volume =       "21",
  pages =        "3--3",
  year =         "1987",
  CODEN =        "IJQSDI",
  ISSN =         "0161-3642",
  bibdate =      "Fri Dec 15 18:12:54 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1987:PISb,
  author =       "P.-O. L{\"o}wdin and N. Y. {\"O}hrn and J. R. Sabin
                 and M. C. Zerner",
  title =        "{Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology Held at Whitney
                 Marine-Biological Laboratory, Marineland, Florida,
                 March 12--14, 1987 --- Introduction}",
  journal =      j-IJQC-BIO-SYMP,
  volume =       "14",
  pages =        "v--v",
  year =         "1987",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  bibdate =      "Fri Dec 15 18:16:17 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Biology Symposium: Proceedings of the International
                 Symposium on Quantum Biology and Quantum Pharmacology",
  journalabr =   "Int J Quantum Chem",
}

@InProceedings{Lowdin:1987:SAD,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Robert Erdahl and Vedene H. {Smith, Jr.}",
  booktitle =    "Density Matrices and Density Functionals",
  title =        "Some Aspects on the Development of the Theory of
                 Reduced Density Matrices and the Representability
                 Problem",
  publisher =    pub-REIDEL,
  address =      pub-REIDEL:adr,
  bookpages =    "xvi + 722",
  pages =        "21--50",
  year =         "1987",
  ISBN =         "90-277-2477-6",
  ISBN-13 =      "978-90-277-2477-9",
  LCCN =         "QC174.17.D44 D471 1987",
  bibdate =      "Fri Nov 17 10:40:35 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Proceedings of a three day conference, held in August
                 1985 and hosted jointly by the Departments of
                 Chemistry, and Mathematics and Statistics of Queen's
                 University.",
  acknowledgement = ack-nhfb,
}

@InProceedings{Lowdin:1987:SAH,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "M. (Michel) Dupuis",
  booktitle =    "Supercomputer Simulations in Chemistry: proceedings of
                 the Symposium on Supercomputer Simulations in
                 Chemistry, held in Montreal, August 25--27, 1985 /
                 sponsored by IBM-Kingston and IBM-Canada",
  title =        "Some Aspects on the History of Computational Quantum
                 Chemistry --- in View of the Development of the
                 Supercomputers and Large-Scale Parallel Computers",
  volume =       "44",
  publisher =    pub-SV,
  address =      pub-SV:adr,
  pages =        "1--48",
  year =         "1987",
  ISBN =         "0-387-17178-9",
  ISBN-13 =      "978-0-387-17178-4",
  LCCN =         "QD462.A1 S98 1985",
  bibdate =      "Fri Nov 17 10:42:09 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  series =       "Lecture Notes in Chemistry",
  acknowledgement = ack-nhfb,
}

@InProceedings{Lowdin:1987:TJC,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Robert Erdahl and Vedene H. {Smith, Jr.}",
  booktitle =    "Density Matrices and Density Functionals",
  title =        "A Tribute to {A. John Coleman} --- the ``Tame''
                 Mathematician",
  publisher =    pub-REIDEL,
  address =      pub-REIDEL:adr,
  bookpages =    "xvi + 722",
  pages =        "1--4",
  year =         "1987",
  ISBN =         "90-277-2477-6",
  ISBN-13 =      "978-90-277-2477-9",
  LCCN =         "QC174.17.D44 D471 1987",
  bibdate =      "Tue Dec 19 15:32:27 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Proceedings of a three day conference, held in August
                 1985 and hosted jointly by the Departments of
                 Chemistry, and Mathematics and Statistics of Queen's
                 University.",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1988:ANF,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Announcement of New Format",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "19",
  pages =        "xiii--xiii",
  year =         "1988",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60612-7",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608606127",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1988:CCP,
  author =       "P.-O. L{\"o}wdin",
  title =        "Call for Contributions to Paper Symposium on the
                 {Pariser--Parr--Pople} Method",
  journal =      j-IJQC-BIO-SYMP,
  volume =       "15",
  pages =        "vi--vi",
  year =         "1988",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  bibdate =      "Fri Dec 15 18:17:59 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Biology Symposium: Proceedings of the International
                 Symposium on Quantum Biology and Quantum Pharmacology",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1988:CSA,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Change of Spectra Associated with Unbounded
                 Similarity Transformations of a Many-Particle
                 {Hamiltonian} and the Occurrence of Resonance States in
                 the Method of Complex Scaling. {Part I}. {General}
                 Theory",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "19",
  pages =        "87--138",
  year =         "1988",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60614-0",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608606140",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
  tableofcontents = "I. Introduction 88 \\
                 II. Bounded Similarity Transformations 88 \\
                 III. Unbounded Similarity Transformations and the
                 Associated Change of Boundary Conditions 98 \\
                 IV. Method of Complex Scaling 118 \\
                 Appendix A. Construction of Dual Complex Conjugate
                 Biorthonormal Sets 131 \\
                 Appendix B. Examples of Transformed Operators Having a
                 Continuous Spectrum: The Momentum $p$ and the Kinetic
                 Energy $T = p^2/2m$ 133 \\
                 Appendix C. Example of Complex Eigenvalues Occurring as
                 a Result of the Approximations Introduced 136 \\
                 References 138",
  toc =          "I. Introduction 88;\\
                 II. Bounded Similarity Transformations 88;\\
                 III. Unbounded Similarity Transformations and the
                 Associated Change of Boundary Conditions 98;\\
                 IV. Method of Complex Scaling 118;\\
                 Appendix A. Construction of Dual Complex Conjugate
                 Biorthonormal Sets 131;\\
                 Appendix B. Examples of Transformed Operators Having a
                 Continuous Spectrum: The Momentum $p$ and the Kinetic
                 Energy $T = p^2/2m$ 133;\\
                 Appendix C. Example of Complex Eigenvalues Occurring as
                 a Result of the Approximations Introduced 136;\\
                 References 138",
}

@Article{Lowdin:1988:Ia,
  author =       "P. O. L{\"o}wdin and N. Y. {\"O}hrn and J. R. Sabin
                 and M. C. Zerner",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "34",
  number =       "S15",
  pages =        "v--v",
  day =          "12--19",
  month =        mar,
  year =         "1988",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560340702",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Supplement: Proceedings of the International Syposium
                 on Quantum Biology and Quantum Pharmacology.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Lowdin:1988:Ib,
  author =       "P. O. L{\"o}wdin and N. Y. {\"O}hrn and J. R. Sabin
                 and M. C. Zerner",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "34",
  number =       "S22",
  pages =        "ix--ix",
  day =          "12--19",
  month =        mar,
  year =         "1988",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560340802",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Supplement: Proceedings of the International Syposium
                 on Quantum Chemistry, Solid-State Theory, and
                 Computational Methods.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Lowdin:1988:IGQ,
  author =       "Per-Olov L{\"o}wdin",
  title =        "The Importance of General Quantum Statistics and the
                 {Liouville} Equation in Physical Chemistry --- Some
                 Recent Trends in Quantum Chemistry",
  journal =      j-Z-PHYS-CHEM-LEIPZIG,
  volume =       "269",
  number =       "2",
  pages =        "284--305",
  month =        "????",
  year =         "1988",
  CODEN =        "ZPCLAH",
  ISSN =         "0323-4479",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  abstract =     "The author presents an extensive summary of the
                 history of theoretical chemistry, including Dalton's
                 law of multiple proportions, the development of the
                 idea of chemical bonds, the nature of atoms and
                 molecules, the development of wave mechanics,
                 Heisenberg's uncertainty principle and covalent bonding
                 theory. The application of pure quantum mechanics to
                 quantum chemistry is discussed in some detail, along
                 with the use of general quantum statistics",
  acknowledgement = ack-nhfb,
  fjournal =     "{Zeitschrift f{\"u}r physikalische Chemie (Leipzig)}",
  journalabr =   "Z Phys Chem Leipzig",
  journalabr-2 = "Z. Phys. Chemie (Leipzig)",
}

@Article{Lowdin:1988:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "19",
  pages =        "xi--xii",
  year =         "1988",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60611-5",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608606115",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1988:PISc,
  author =       "P.-O. L{\"o}wdin and N. Y. {\"O}hrn and J. R. Sabin
                 and M. C. Zerner",
  title =        "{Proceedings of the International Symposium on Quantum
                 Chemistry, Solid-State Theory, and Computational
                 Methods --- Held at Marineland, Florida, March 12--19,
                 1988 --- Introduction}",
  journal =      j-IJQC-QC-SYMP,
  volume =       "22",
  pages =        "ix--ix",
  year =         "1988",
  CODEN =        "IJQSDI",
  ISSN =         "0161-3642",
  bibdate =      "Fri Dec 15 18:16:39 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1988:PISd,
  author =       "P.-O. L{\"o}wdin and N. Y. {\"O}hrn and J. R. Sabin
                 and M. C. Zerner",
  title =        "{Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology Held at Marineland,
                 Florida, March 12--19, 1988 --- Introduction}",
  journal =      j-IJQC-BIO-SYMP,
  volume =       "15",
  pages =        "v--v",
  year =         "1988",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  bibdate =      "Fri Dec 15 18:17:59 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Biology Symposium: Proceedings of the International
                 Symposium on Quantum Biology and Quantum Pharmacology",
  journalabr =   "Int J Quantum Chem",
}

@InProceedings{Lowdin:1988:RFE,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "K. Fukui and T. Yamabe",
  booktitle =    "Proc. Kyoto Inauguration Institute for Fundamental
                 Chemistry",
  title =        "The Role of Free Energy, Entropy, and Similar Concepts
                 in the Future of Quantum Chemistry",
  publisher =    "????",
  address =      "Kyoto, Japan",
  pages =        "??--??",
  year =         "1988",
  ISBN =         "????",
  ISBN-13 =      "????",
  LCCN =         "????",
  bibdate =      "Fri Nov 17 10:55:18 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1988:RUP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "To Reach for the Unreachable --- Psi and Gamma",
  journal =      j-J-MOL-STRUCT,
  volume =       "165",
  number =       "3--4",
  pages =        "177--188",
  month =        may,
  year =         "1988",
  CODEN =        "JMOSB4",
  ISSN =         "0022-2860 (print), 1872-8014 (electronic)",
  ISSN-L =       "0022-2860",
  bibdate =      "Mon Dec 18 10:44:17 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  note =         "Also as Theochem, vol. 42, no. 3--4.",
  abstract =     "The structure of current molecular theory is briefly
                 reviewed in three specific areas: pure quantum
                 mechanics, general quantum theory and the applications
                 of the study of the Coulombic Hamiltonian",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Molecular Structure",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00222860",
  remark =       "Theochem volumes appear irregularly co-titled as
                 Journal of Molecular Structure volumes, sigh\ldots{}.",
}

@InProceedings{Lowdin:1988:SAS,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some aspects on the structure and present situation of
                 quantum chemistry as expressed as the {Girona}
                 workshop",
  crossref =     "Carbo:1988:QCB",
  pages =        "605--622",
  year =         "1988",
  bibdate =      "Tue Dec 05 06:05:03 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  remark =       "Missing from
                 http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html.",
}

@Article{Lowdin:1988:STI,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On Some Thermodynamical Inequalities",
  journal =      j-IJQC,
  volume =       "34",
  number =       "S22",
  pages =        "337--342",
  day =          "12--19",
  month =        mar,
  year =         "1988",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560340838",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Dec 18 11:05:52 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  note =         "Supplement: Proceedings of the International Syposium
                 on Quantum Chemistry, Solid-State Theory, and
                 Computational Methods.",
  abstract =     "A simple proof is given for the thermodynamic
                 inequality {$ F - F_0 - (H - H_0)_0 < 0 $} in the case
                 when the two Hamiltonians {$H$} and {$ H_0 $} do not
                 commute",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@InProceedings{Lowdin:1988:UIP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "The use of inner projections and rational
                 approximation in the future of quantum chemistry",
  crossref =     "Carbo:1988:QCB",
  pages =        "1--24",
  year =         "1988",
  bibdate =      "Tue Dec 05 06:05:03 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  remark =       "Missing from
                 http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html.",
}

@Article{Lowdin:1989:CSA,
  author =       "Per-Olov L{\"o}wdin and Piotr Froelich and Manoj
                 M{\'\i}shra",
  title =        "On the Change of Spectra Associated with Unbounded
                 Similarity Transformations of a Many-Particle
                 {Hamiltonian} and the Occurrence of Resonance States in
                 the Method of Complex Scaling. {Part II}.
                 {Applications} to the {Hartree--Fock} Scheme Based on
                 the Bi-Variational Principle",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "20",
  pages =        "185--237",
  year =         "1989",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60627-9",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion; Science Citation Index database
                 (1980--2000)",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608606279",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
  journalabr =   "Advan Quantum Chem",
  tableofcontents = "1. Introduction 188 \\
                 2. Brief Review of Some of the Results in the Previous
                 Studies of the Stability Problem for a Pair of Adjoint
                 Operators 190 \\
                 3. Similarity Transformation of a Many-Particle
                 Operator and Its Consequences in the Hartree--Fock
                 Scheme 199 \\
                 4. Properties of a Many-Particle Hamiltonian under
                 Complex Scaling 217 \\
                 5. Numerical Application of the Complex Scaling Method
                 in the Hartree--Fock Approximation 222 \\
                 6. Conclusions and Acknowledgments 231 \\
                 Appendix A. Treatment of One-Particle Subspaces of
                 Order N, Which Are Stable under Complex Conjugation 233
                 \\
                 References 237",
  toc =          "1. Introduction 188;\\
                 2. Brief Review of Some of the Results in the Previous
                 Studies of the Stability Problem for a Pair of Adjoint
                 Operators 190;\\
                 3. Similarity Transformation of a Many-Particle
                 Operator and Its Consequences in the Hartree--Fock
                 Scheme 199;\\
                 4. Properties of a Many-Particle Hamiltonian under
                 Complex Scaling 217;\\
                 5. Numerical Application of the Complex Scaling Method
                 in the Hartree--Fock Approximation 222;\\
                 6. Conclusions and Acknowledgments 231;\\
                 Appendix A. Treatment of One-Particle Subspaces of
                 Order N, Which Are Stable under Complex Conjugation
                 233;\\
                 References 237",
}

@Article{Lowdin:1989:IDI,
  author =       "P.-O. L{\"o}wdin and O. Goscinski and E. Br{\"a}ndas
                 and J. L. Calais",
  title =        "Issue Dedicated to {Ivar Waller} on His 90th Birthday,
                 {June 11, 1988} --- Preface",
  journal =      j-IJQC,
  volume =       "35",
  number =       "6",
  pages =        "703--703",
  month =        "Spring",
  year =         "1989",
  CODEN =        "IJQCB2",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:44:10 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1989:LWC,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Long Way from the {Coulombic Hamiltonian} to
                 the Electronic Structure of Molecules",
  journal =      j-PURE-APPL-CHEM,
  volume =       "61",
  number =       "12",
  pages =        "2065--2074",
  month =        dec,
  year =         "1989",
  CODEN =        "PACHAS",
  ISSN =         "0033-4545 (print), 1365-3075 (electronic)",
  ISSN-L =       "0033-4545",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  note =         "Plenary and invited lectures presented at the
                 International Symposium on the Electronic Structure and
                 Properties of Molecules and Crystals held in
                 Dubrovnik-Cavtat, Yugoslavia, 29 August -- 3 September,
                 1988, ed. Z. B. Maksic.",
  acknowledgement = ack-nhfb,
  fjournal =     "Pure and Applied Chemistry",
  journal-URL =  "http://www.degruyter.com/view/j/pac",
  journalabr =   "Pure Appl Chem",
}

@Article{Lowdin:1989:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "20",
  pages =        "xi--xii",
  year =         "1989",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60624-3",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608606243",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1989:PIC,
  author =       "P.-O. L{\"o}wdin",
  title =        "{Proceedings of the 6th International Congress on
                 Quantum Chemistry, Hebrew University, Jerusalem,
                 Israel, 22--25 August 1988: Editor's Preface}",
  journal =      j-IJQC,
  volume =       "36",
  number =       "3",
  pages =        "189--190",
  month =        sep,
  year =         "1989",
  CODEN =        "IJQCB2",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1989:PIW,
  author =       "Per-Olov L{\"o}wdin and Osvaldo Goscinski and
                 Jean-Louis-Calais and Erkki Br{\"a}ndas",
  title =        "{Professor Ivar Waller} 90-years anniversary {June 11,
                 1988}",
  journal =      j-IJQC,
  volume =       "35",
  number =       "6",
  pages =        "703--703",
  year =         "1989",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560350603",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1989:PSQ,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Present Situation of Quantum Chemistry:
                 {Chairman}'s Introductory Remarks at the {6th
                 International Congress of Quantum Chemistry (ICQC)}",
  journal =      j-IJQC,
  volume =       "36",
  number =       "3",
  pages =        "191--199",
  month =        sep,
  year =         "1989",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560360304",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Dec 15 18:21:02 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  note =         "Proc. 6th International Congress in Quantum Chemistry,
                 in Jerusalem, Aug., 1988.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1989:RFE,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Role of Free Energy in Future Development of the
                 Quantum Theory of Microelectronics",
  journal =      j-ACTA-POLYTECH-SCAND-ELECTR-ENG-SER,
  volume =       "64",
  number =       "El64",
  pages =        "398--403",
  month =        "????",
  year =         "1989",
  CODEN =        "APSEA5",
  ISSN =         "0001-6845",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "Compendex database;
                 http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000)",
  note =         "Proc. Helsinki Summer Institute on Micro-electronics,
                 Ed. J. Sinkkonen.",
  abstract =     "The role of the concept of free energy as it appears
                 in classical thermodynamics, statistical mechanics, and
                 in modern quantum theory is briefly reviewed. In the
                 study of microelectronics, the quantum theory of matter
                 is an essential tool, and some current methods for
                 evaluating the free energy of quantum systems are
                 described",
  acknowledgement = ack-nhfb,
  classification = "641; 713; 714; 931",
  fjournal =     "Acta Polytechnica Scandinavica, Electrical Engineering
                 Series",
  keywords =     "Classical Thermodynamics; Free Energy;
                 Microelectronics Quantum Theory; Quantum Systems;
                 Statistical Mechanics; Thermodynamics --- Theory",
}

@Article{Lowdin:1989:SCP,
  author =       "P.-O. L{\"o}wdin",
  title =        "Some Comments on the Present Situation of Quantum
                 Chemistry in View of the Discussions at the {Dubrovnik}
                 Workshop on the Electronic Structure of Molecules",
  journal =      j-PURE-APPL-CHEM,
  volume =       "61",
  number =       "12",
  pages =        "2185--2194",
  month =        dec,
  year =         "1989",
  CODEN =        "PACHAS",
  DOI =          "https://doi.org/10.1351/pac198961122185",
  ISSN =         "0033-4545 (print), 1365-3075 (electronic)",
  ISSN-L =       "0033-4545",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  note =         "Plenary and invited lectures presented at the
                 International Symposium on the Electronic Structure and
                 Properties of Molecules and Crystals held in
                 Dubrovnik-Cavtat, Yugoslavia, 29 August -- 3 September,
                 1988, ed. Z. B. Maksic.",
  acknowledgement = ack-nhfb,
  fjournal =     "Pure and Applied Chemistry",
  journal-URL =  "http://www.degruyter.com/view/j/pac",
  journalabr =   "Pure Appl Chem",
}

@Article{Lowdin:1989:SPB,
  author =       "Per-Olov L{\"o}wdin and Piotr Froelich and Manoj
                 Mishra",
  title =        "Some Properties of the Bivariational {Hartree--Fock}
                 Scheme for Complex Symmetric Many-particle Operators",
  journal =      j-IJQC,
  volume =       "36",
  number =       "2",
  pages =        "93--103",
  month =        aug,
  year =         "1989",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560360202",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  abstract =     "The bivariational Hartree--Fock scheme for a general
                 many-body operator {$T$} is discussed with particular
                 reference to the complex symmetric case: {$ T^\dagger =
                 T* $}. It is shown that, even in the case when the
                 complex symmetric operator {$T$} is real and hence also
                 self-adjoint, the complex symmetric Hartree--Fock
                 scheme does not reduce to the conventional real form,
                 unless one introduces the constraint that the
                 {$N$}-dimensional space spanned by the Hartree--Fock
                 functions \Psi should be stable under complex
                 conjugation, so that {$ \Psi * = \Psi \alpha $}. If one
                 omits this constraint, one gets a complex symmetric
                 formulation of the Hartree--Fock scheme for a real
                 {$N$}-electron Hamiltonian having the properties {$ H =
                 H*= H^{\dagger } $}, in which the effective Hamiltonian
                 {$ H_{\hbox {eff}}(1) $} may have complex eigenvalues $
                 \epsilon_k $. By using the method of complex scaling,
                 it is indicated that these complex eigenvalues-at least
                 for certain systems-may be related to the existence of
                 so-called physical resonance states, and a simple
                 example is given. Full details will be given
                 elsewhere",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@InCollection{Lowdin:1989:SRD,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Imre G. Csizmadia",
  booktitle =    "WATOC Annual Report 1989",
  title =        "Some Recent Developments in Theoretical Organic
                 Chemistry",
  publisher =    "????",
  address =      "Toronto, Ontario, Canada",
  pages =        "??--??",
  year =         "1989",
  ISBN =         "????",
  ISBN-13 =      "????",
  LCCN =         "????",
  bibdate =      "Mon Dec 18 11:01:44 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1989:SRP,
  author =       "Per-Olov L{\"o}wdin and Bengt Nagel",
  title =        "Some Remarks on the Perturbation and Variation
                 Perturbation Calculations of the Free Energy for
                 Quantum Systems",
  journal =      j-IJQC,
  volume =       "35",
  number =       "6",
  pages =        "839--850",
  month =        "Spring",
  year =         "1989",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560350619",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  note =         "Ivar Waller issue.",
  abstract =     "A generalization of the Gibbs-Bogoliubov inequality {$
                 F \leq F_0 + (H - H_0)_0 $} for the free energy {$F$}
                 is studied which leads to a variation principle for
                 this quantity that may be of importance in certain
                 computational applications to quantum systems. This
                 approach is coupled with a study of the perturbation
                 expansion of the free energy for a canonical ensemble
                 with {$ H_0 + \lambda V $} in the general case when {$
                 H_0 $} and {$V$} do not commute. The second- and
                 high-order derivatives of the free energy with respect
                 to the perturbation parameter lambda are calculated.
                 From the second-order term is finally obtained a
                 second-order correction to the previous variational
                 minimum for the free energy",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1990:CCM,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Concepts of Convergence in Mathematical Chemistry",
  journal =      j-J-MATH-CHEM,
  volume =       "4",
  number =       "1",
  pages =        "401--414",
  month =        dec,
  year =         "1990",
  CODEN =        "JMCHEG",
  DOI =          "https://doi.org/10.1007/BF01170023",
  ISSN =         "0259-9791 (print), 1572-8897 (electronic)",
  ISSN-L =       "0259-9791",
  MRclass =      "92E99 (00A06 00A69)",
  MRnumber =     "91m:92046",
  bibdate =      "Fri Apr 10 06:38:58 MDT 2015",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 http://link.springer.com/journal/10910/4/1;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathchem.bib;
                 MathSciNet database",
  note =         "Proc. Galveston Conference on Mathematical Chemistry.
                 Accepted for publication.",
  URL =          "http://link.springer.com/article/10.1007/BF01170023",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Chemistry",
  journal-URL =  "http://link.springer.com/journal/10910",
  journalabr =   "J. Math. Chem.",
}

@Article{Lowdin:1990:Ea,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Editorial",
  journal =      j-IJQC,
  volume =       "38",
  number =       "S17",
  pages =        "v--vi",
  day =          "17--24",
  month =        mar,
  year =         "1990",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560381702",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Tue Oct 11 18:55:36 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1990.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Biology and Quantum Pharmacology.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Lowdin:1990:Eb,
  author =       "P.-O. L{\"o}wdin",
  title =        "Editorial",
  journal =      j-IJQC-QC-SYMP,
  volume =       "24",
  pages =        "xi--xii",
  year =         "1990",
  CODEN =        "IJQSDI",
  ISSN =         "0161-3642",
  bibdate =      "Wed Jan 3 14:24:13 MST 1996",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib",
  acknowledgement = ack-nhfb,
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1990:Ec,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Editorial",
  journal =      j-IJQC,
  volume =       "38",
  number =       "S17",
  pages =        "V--VI",
  year =         "1990",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560381702",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1990:I,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "37",
  number =       "4",
  pages =        "317--317",
  month =        "????",
  year =         "1990",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560370405",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Tue Dec 26 12:13:09 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1990:IJQ,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Journal of Quantum Chemistry} {A}
                 Journal Devoted to Quantum Theory and Computations in
                 Chemistry, Condensed Matter Physics, and Biology;
                 Editorial-Program and Policies",
  journal =      j-IJQC,
  volume =       "38",
  number =       "S24",
  pages =        "xi--xii",
  day =          "17--24",
  month =        mar,
  year =         "1990",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560382402",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Chemistry, Solid-State Physics, and
                 Computational Methods.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@InProceedings{Lowdin:1990:IQC,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Mu Shik John",
  booktitle =    "Proc. Second EurAsia Conference on Chemistry in Seoul,
                 April 16--20, 1990",
  title =        "On the Importance of Quantum Chemistry in the Future
                 of Chemistry",
  publisher =    "KAIST",
  address =      "Seoul, Korea",
  pages =        "3--??",
  year =         "1990",
  ISBN =         "????",
  ISBN-13 =      "????",
  LCCN =         "????",
  bibdate =      "Fri Nov 17 11:06:04 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1990:LWC,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Long Way from the {Coulombic Hamiltonian} to
                 the Intermolecular Energy Surfaces: Concluding Remarks
                 at the {Troms{\o} EUCHEM Conference, June 20--22,
                 1989}",
  journal =      j-IJQC,
  volume =       "38",
  number =       "5",
  pages =        "741--758",
  month =        "????",
  year =         "1990",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560380514",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  abstract =     "After a brief review of the main results given at the
                 conference, the general properties of the Coulombic
                 Hamiltonian for a system of electrons moving in a
                 framework of moving atomic nuclei---considered as point
                 charges---are discussed. Since this Hamiltonian is
                 invariant under translations and rotations, the total
                 momentum and the total angular momentum are constants
                 of motion, which means that it is possible to separate
                 the motion of the center of mass and the rotation of
                 the system as a whole. Even if these separations are
                 simple in principle, they lead to a mixing of the
                 electronic and nuclear coordinates that complicates the
                 transformed Hamiltonian. The general features of the
                 Hamiltonian are discussed both in pure quantum
                 mechanics and general quantum theory dealing with wave
                 functions {$ \Psi $} respective density matrices rho or
                 system operators {$T$}. The principles of the latter
                 are derived from five simple axioms, and it is shown
                 that pure quantum mechanics is a special case of the
                 general theory and that the analogy between these two
                 approaches is essential for the `economy of thinking'.
                 It is indicated that the general theory of the shape
                 and topology of the energy surface {$ (H) = T r H
                 \Gamma $} and its critical points, as a function of the
                 system operator {$ \Gamma $} involving both electronic
                 and nuclear coordinates, is a very difficult
                 mathematical problem and that calculation of this
                 surface even for simple molecular systems represents a
                 formidable computational problem, which has to be
                 solved in order to be able to understand the nature of
                 chemical reactions from first principles",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1990:MCM,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Mathematics in Chemistry and in Mathematical
                 Chemistry",
  journal =      j-J-MATH-CHEM,
  volume =       "4",
  number =       "1",
  pages =        "3--14",
  month =        dec,
  year =         "1990",
  CODEN =        "JMCHEG",
  DOI =          "https://doi.org/10.1007/BF01170000",
  ISSN =         "0259-9791 (print), 1572-8897 (electronic)",
  ISSN-L =       "0259-9791",
  MRclass =      "01A60 (00A69 92Exx)",
  MRnumber =     "1 079 765",
  bibdate =      "Thu Apr 9 18:13:38 MDT 2015",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 http://link.springer.com/journal/10910/4/1;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathchem.bib;
                 MathSciNet database",
  note =         "Proc. Galveston Conference on Mathematical Chemistry.
                 Accepted for publication.",
  URL =          "http://link.springer.com/article/10.1007/BF01170000",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Chemistry",
  journal-URL =  "http://link.springer.com/journal/10910",
  journalabr =   "J. Math. Chem.",
}

@Article{Lowdin:1991:CCP,
  author =       "Per-Olov L{\"o}wdin and Michael Zerner",
  title =        "Call for contributions to paper symposium on
                 semi-empirical methods in quantum chemistry and
                 solid-state theory",
  journal =      j-IJQC,
  volume =       "40",
  number =       "2",
  pages =        "287--287",
  year =         "1991",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560400209",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1991:CRS,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Concluding Remarks at the {Second WATOC World Congress
                 in Toronto, July 8--14, 1991}",
  journal =      j-J-MOL-STRUCT,
  volume =       "233",
  pages =        "353--355",
  month =        sep,
  year =         "1991",
  CODEN =        "JMOSB4",
  ISSN =         "0022-2860 (print), 1872-8014 (electronic)",
  ISSN-L =       "0022-2860",
  bibdate =      "Fri Nov 17 11:09:58 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  note =         "Also as Theochem, vol. 79.",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Molecular Structure",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00222860",
  remark =       "Theochem volumes appear irregularly co-titled as
                 Journal of Molecular Structure volumes, sigh\ldots{}.",
}

@Article{Lowdin:1991:E,
  author =       "P. O. L{\"o}wdin",
  title =        "Editorial",
  journal =      j-IJQC-QC-SYMP,
  volume =       "25",
  pages =        "ix--ix",
  year =         "1991",
  CODEN =        "IJQSDI",
  ISSN =         "0161-3642",
  bibdate =      "Wed Jan 3 14:24:13 MST 1996",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1990.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem., Quantum Chem. Symp.",
  fjournal =     "International Journal of Quantum Chemistry, Quantum
                 Chemistry Symposium",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1991:HDV,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Historical Development of the Valence Bond
                 Method and the Non-Orthogonality Problem",
  journal =      j-J-MOL-STRUCT,
  volume =       "229",
  pages =        "1--14",
  day =          "6",
  month =        may,
  year =         "1991",
  CODEN =        "JMOSB4",
  ISSN =         "0022-2860 (print), 1872-8014 (electronic)",
  ISSN-L =       "0022-2860",
  bibdate =      "Mon Dec 18 10:45:03 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  note =         "Also as Theochem, vol. 75.",
  abstract =     "A brief review is given of the development of the
                 valence bond method over the last 60 years and the
                 importance of the non-orthogonality problem",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Molecular Structure",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00222860",
  remark =       "This volume is complete in a single issue, so no issue
                 number is assigned. Theochem volumes appear irregularly
                 co-titled as Journal of Molecular Structure volumes,
                 sigh\ldots{}.",
}

@Article{Lowdin:1991:IHM,
  author =       "P.-O. L{\"o}wdin",
  title =        "Issue in Honor of {Michael Kasha} --- Introduction",
  journal =      j-IJQC,
  volume =       "39",
  number =       "3",
  pages =        "231--231",
  month =        "????",
  year =         "1991",
  CODEN =        "IJQCB2",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1991:IJQa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Journal of Quantum Chemistry} --- {A}
                 Journal Devoted to Quantum Theory and Computations in
                 Chemistry, Condensed Matter Physics, and Biology.
                 Editorial --- Program and Policies",
  journal =      j-IJQC,
  volume =       "39",
  number =       "1",
  pages =        "1--2",
  year =         "1991",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560390102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Nov 17 11:06:50 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1991:IJQb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Journal of Quantum Chemistry}: a
                 journal devoted to quantum theory and computations in
                 chemistry, condensed matter physics, and biology.
                 Editorial Program and Policies",
  journal =      j-IJQC,
  volume =       "40",
  number =       "1",
  pages =        "1--2",
  month =        "????",
  year =         "1991",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560400102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1991:IJQc,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Journal of Quantum Chemistry}: a
                 journal devoted to quantum theory and computations in
                 chemistry, condensed matter physics, and biology:
                 Editorial Program and Policies",
  journal =      j-IJQC,
  volume =       "40",
  number =       "S18",
  pages =        "v--vi",
  month =        "????",
  year =         "1991",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560400702",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Supplement: Proceeding of the International Symposium
                 on Quantum Biology and Quantum Pharmacology.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Lowdin:1991:IJQd,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Journal of Quantum Chemistry}: a
                 journal devoted to quantum theory and computations in
                 chemistry, condensed matter physics, and biology.
                 Editorial program and policies",
  journal =      j-IJQC,
  volume =       "40",
  number =       "S25",
  pages =        "ix--x",
  month =        "????",
  year =         "1991",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560400802",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib; Science
                 Citation Index database (1980--2000)",
  note =         "Supplement: Proceeding of the International Symposium
                 on Quantum Chemistry Solid-State Physics, and
                 Computational Methods.",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
  onlinedate =   "19 Oct 2004",
}

@Article{Lowdin:1991:ITF,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Importance of Theory in the Future Development
                 of Chemistry",
  journal =      j-J-MOL-STRUCT,
  volume =       "230",
  pages =        "1--3",
  day =          "24",
  month =        may,
  year =         "1991",
  CODEN =        "JMOSB4",
  ISSN =         "0022-2860 (print), 1872-8014 (electronic)",
  ISSN-L =       "0022-2860",
  bibdate =      "Mon Dec 18 11:01:52 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  note =         "Also as Theochem, vol. 76. Proceedings of the 2nd
                 World Condensed of Theoretical Organic Chemistry
                 (WATOC), July 9--14, 1990, University of Toronto,
                 Toronto, Ontario, Canada.",
  abstract =     "Quantum chemistry deals particularly with the
                 electronic structure of atoms, molecules, and condensed
                 matter, and describes it in terms of electronic-wave
                 patterns of standing waves. It deals also with
                 collisions between atoms and molecules and with the
                 study of chemical reactivity. In the very beginning it
                 was considered as a rather sophisticated subject which
                 required a great deal of higher mathematics and group
                 theory, and for some time the new field could boast
                 more of its conceptual framework than of its numerical
                 accomplishments. With the development of modern
                 electronic computers, this situation has changed,
                 and-with the parallel development in such fields as,
                 for instance, crystallography-chemists in general have
                 become much more accustomed to the use of high-brow
                 mathematics and large-scale computations. Today many
                 chemists undertake both experimental and theoretical
                 work, and many computational programs based on quantum
                 theory are now used both to interpret the experimental
                 results obtained and to predict new ones. Theory has
                 hence become a powerful tool in many chemical
                 laboratories as well as in the chemical and
                 pharmaceutical industry",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Molecular Structure",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00222860",
  remark =       "This volume is complete in a single issue, so no issue
                 number is assigned. Theochem volumes appear irregularly
                 co-titled as Journal of Molecular Structure volumes,
                 sigh\ldots{}.",
}

@InCollection{Lowdin:1991:MSC,
  author =       "Per-Olov L{\"o}wdin",
  editor =       "Rita G. Lerner and George L. Trigg",
  booktitle =    "Encyclopedia of Physics",
  title =        "Molecular Structure Calculations --- a Review",
  publisher =    "VCH Publishers",
  address =      "New York, NY, USA",
  edition =      "Second",
  bookpages =    "xiv + 1408",
  pages =        "753--761",
  year =         "1991",
  ISBN =         "0-89573-752-3",
  ISBN-13 =      "978-0-89573-752-6",
  LCCN =         "QC5 .E545 1991",
  bibdate =      "Mon Dec 18 10:53:20 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:1991:NMD,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On Nuclear Motion and the Definition of Molecular
                 Structure",
  journal =      j-J-MOL-STRUCT,
  volume =       "230",
  pages =        "13--15",
  month =        may,
  year =         "1991",
  CODEN =        "JMOSB4",
  ISSN =         "0022-2860 (print), 1872-8014 (electronic)",
  ISSN-L =       "0022-2860",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  note =         "Also as Theochem, vol. 76.",
  abstract =     "The author discusses one of the most urgent problems
                 of modern quantum chemistry which is to treat the
                 motions of the atomic nuclei and the electrons on a
                 more or less equivalent basis",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Molecular Structure",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00222860",
  remark =       "Theochem volumes appear irregularly co-titled as
                 Journal of Molecular Structure volumes, sigh\ldots{}.",
}

@Unpublished{Lowdin:1991:OOA,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Om Os{\"a}kerhetsrelationerna i Akustiken och Deras
                 Betydelse vid Definitionen av Begreppet Ton.
                 ({Swedish}) [{On} Uncertainty Relations in Acoustics
                 and Their Meaning by the Definition of the Concept of
                 Tone]",
  month =        Feb,
  year =         "1991",
  bibdate =      "Fri Nov 17 11:13:33 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Invited paper at Colloquium on ``Quid est Sonus - Quid
                 est Tonus'' at the Swedish Royal Academy of Music,
                 Stockholm.",
  acknowledgement = ack-nhfb,
  language =     "Swedish",
}

@Article{Lowdin:1991:OTS,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Origin of the Tone System and the Theory of
                 Harmony",
  journal =      j-PROC-AMER-PHIL-SOC,
  volume =       "135",
  number =       "4",
  pages =        "533--556",
  month =        dec,
  year =         "1991",
  CODEN =        "PAPCAA",
  ISSN =         "0003-049X (print), 2326-9243 (electronic)",
  ISSN-L =       "0003-049X",
  bibdate =      "Thu Nov 16 14:27:46 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 OCLC ArticleFirst database",
  URL =          "http://www.jstor.org/stable/986815",
  acknowledgement = ack-nhfb,
  fjournal =     "Proceedings of the {American Philosophical Society}
                 held at {Philadelphia} for promoting useful knowledge",
  journal-URL =  "http://www.jstor.org/journal/procamerphilsoci",
  journalabr =   "Proc. Am. Phil. Soc.",
}

@Article{Lowdin:1991:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "22",
  pages =        "ix--x",
  year =         "1991",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60360-3",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion; Science Citation Index database
                 (1980--2000)",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608603603",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1991:PTE,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On the Pairing Theorem and Its Extension",
  journal =      j-ISRAEL-J-CHEM,
  volume =       "31",
  number =       "4",
  pages =        "297--302",
  year =         "1991",
  CODEN =        "ISJCAT",
  ISSN =         "0021-2148",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  note =         "Ruben Pauncz dedicatory volume.",
  abstract =     "The mirror theorem in matrix theory is briefly
                 reviewed. It says that if {$R$} and {$S$} are matrices
                 of the order $ m \times n $ and $ n \times m $, then
                 the two products {$ R S $} and {$ S R $} have the same
                 nonvanishing eigenvalues with the same multiplicities
                 and canonical structures. The mirror theorem is used to
                 show that if $ a = (a_k) $ and $ b = (b_l) $ are two
                 sets of orbitals of order $m$ and $n$, respectively,
                 then there exist two unitary transformations {$U$} and
                 {$V$} such that the orbitals {$ a' = a U $} and {$ b' =
                 b V $} have the special property $ (a'_k \bmod b_l') =
                 \lambda_k \delta_{kl} $, i.e., they are all orthogonal
                 to each other unless they belong to the same pair
                 having $ k = l $. This pairing theorem is of
                 fundamental importance in treating the Coulomb
                 correlation in molecular calculations by means of the
                 so-called alternant molecular orbital (AMO) method,
                 which uses for the occupied orbitals different orbitals
                 for different spins. A simple extension of this
                 approach to the virtual orbitals is also shown",
  acknowledgement = ack-nhfb,
  fjournal =     "Israel Journal of Chemistry",
  journalabr =   "Isr J Chem",
}

@Article{Lowdin:1991:SCP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Current Problems in Quantum Chemistry as
                 Described by Their Key Words and the {International
                 Journal of Quantum Chemistry}",
  journal =      j-IJQC,
  volume =       "39",
  number =       "1",
  pages =        "3--10",
  month =        jan,
  year =         "1991",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560390103",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1991:TOH,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Toner och Harmoni: {N}{\aa}got om Tonsystemets
                 Uppkomst och Harmonil{\"a}rans Grunder. ({Swedish})
                 [{Tone} and Harmony: Something about the Tone Systems
                 Development and the Foundations of Harmony]",
  journal =      "Proc. of the Royal Academy of Arts and Sciences in
                 Uppsala",
  volume =       "28",
  number =       "??",
  pages =        "33--??",
  year =         "1991",
  CODEN =        "????",
  ISSN =         "????",
  bibdate =      "Fri Nov 17 11:12:30 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  language =     "Swedish",
}

@Article{Lowdin:1992:BAI,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On {Boolean} Algebra and Its Importance for the
                 Computer Sciences",
  journal =      j-IJQC,
  volume =       "42",
  number =       "4",
  pages =        "719--726",
  day =          "20",
  month =        may,
  year =         "1992",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560420412",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  abstract =     "A brief survey is given of the abstract contentless
                 Boolean algebra and its realizations to logic, class
                 theory, and electric circuits as well as its
                 applications to the software and hardware of the modern
                 electronic computers. It is shown that three relations,
                 1 + 1 = 1, 1 + 1 = 0, and 1 + 1 = 10, correspond to
                 three different realizations of the algebra, and that
                 they, hence, represent an elementary example of a
                 G{\"o}delian branching point in the abstract Boolean
                 algebra.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1992:E,
  author =       "P.-O. L{\"o}wdin",
  title =        "Editorial",
  journal =      j-IJQC-BIO-SYMP,
  volume =       "19",
  pages =        "v--v",
  year =         "1992",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  bibdate =      "Wed Jan 3 14:24:13 MST 1996",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1990.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem., Quantum Biol. Symp.",
  fjournal =     "International Journal of Quantum Chemistry, Quantum
                 Biology Symposium",
}

@Article{Lowdin:1992:EPP,
  author =       "P.-O. L{\"o}wdin",
  title =        "Editorial --- Program and Policies",
  journal =      j-IJQC-BIO-SYMP,
  volume =       "19",
  pages =        "v--vi",
  year =         "1992",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  bibdate =      "Fri Nov 17 18:17:21 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry. Quantum
                 Biology Symposium: Proceedings of the International
                 Symposium on Quantum Biology and Quantum Pharmacology",
}

@Article{Lowdin:1992:Ia,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "41",
  number =       "1",
  pages =        "5--5",
  year =         "1992",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560410104",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1992:Ib,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "42",
  number =       "4",
  pages =        "525--526",
  year =         "1992",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560420403",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1992:IJQa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "International Journal of Quantum Chemistry --- {A}
                 Journal Devoted to Quantum Theory and Computations in
                 Chemistry, Condensed Matter Physics, and Biology ---
                 Editorial Program and Policies",
  journal =      j-IJQC,
  volume =       "41",
  number =       "1",
  pages =        "1--2",
  month =        "????",
  year =         "1992",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560410102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1992:IJQb,
  author =       "P.-O. L{\"o}wdin",
  title =        "International Journal of Quantum Chemistry --- {A}
                 Journal Devoted to Quantum Theory and Computations in
                 Chemistry, Condensed Matter Physics, and Biology ---
                 Introduction",
  journal =      j-IJQC,
  volume =       "41",
  number =       "1",
  pages =        "5--5",
  month =        "????",
  year =         "1992",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560410104",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1992:IJQc,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Journal of Quantum Chemistry}: a
                 journal devoted to quantum theory and computations in
                 chemistry, condensed matter physics, and biology.
                 Editorial program and policies",
  journal =      j-IJQC,
  volume =       "42",
  number =       "1",
  pages =        "1--2",
  year =         "1992",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560420102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1992:IJQd,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Journal of Quantum Chemistry}: a
                 journal devoted to quantum theory and computations in
                 chemistry, condensed matter physics, and biology.
                 Editorial program and policies",
  journal =      j-IJQC,
  volume =       "43",
  number =       "1",
  pages =        "3--4",
  year =         "1992",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560430103",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1992:IJQe,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Journal of Quantum Chemistry}: a
                 journal devoted to quantum theory and computations in
                 chemistry, condensed matter physics, and biology",
  journal =      j-IJQC,
  volume =       "44",
  number =       "S19",
  pages =        "v--vi",
  day =          "14--21",
  month =        mar,
  year =         "1992",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560440702",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on the Application of Fundamental Theory to Problems of
                 Biology and Pharmacology.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1992:IPS,
  author =       "Per-Olov L{\"o}wdin and Michael C. Zerner",
  title =        "Introduction to the Paper Symposium on Semiempirical
                 Methods in Quantum Chemistry and Solid-State Theory",
  journal =      j-IJQC,
  volume =       "44",
  number =       "4",
  pages =        "421--422",
  day =          "15",
  month =        oct,
  year =         "1992",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560440403",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib; Science
                 Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1992:LAL,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On Linear Algebra, the Least Square Method, and the
                 Search for Linear Relations by Regression Analysis in
                 Quantum Chemistry and Other Sciences",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "23",
  pages =        "83--126",
  year =         "1992",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60029-5",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC Contents1st database; OCR scan conversion; Science
                 Citation Index database (1980--2000)",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600295",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
  journalabr =   "Advan Quantum Chem",
  tableofcontents = "Introduction 84 \\
                 The Method of Least Squares 91 \\
                 Some Properties of Linear Operators and Their Matrix
                 Representations 97 \\
                 The Method of Generalized Least Squares 102 \\
                 The Search for Approximate Linear Dependencies in a
                 Finite Basis Set 108 \\
                 On the Search for Linear Relations by Means of Ordinary
                 Canonical Regression Analysis 111 \\
                 Appendice 119 \\
                 References 125",
  toc =          "Introduction 84;\\
                 The Method of Least Squares 91;\\
                 Some Properties of Linear Operators and Their Matrix
                 Representations 97;\\
                 The Method of Generalized Least Squares 102;\\
                 The Search for Approximate Linear Dependencies in a
                 Finite Basis Set 108;\\
                 On the Search for Linear Relations by Means of Ordinary
                 Canonical Regression Analysis 111;\\
                 Appendice 119;\\
                 References 125",
}

@Article{Lowdin:1992:Pa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "23",
  pages =        "ix--x",
  year =         "1992",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60027-1",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600271",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1992:Pb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "24",
  pages =        "ix--x",
  year =         "1992",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60099-4",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600994",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1992:RSC,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On Rotations as Special Cases of Unitary
                 Transformations with Some Applications to the Theory of
                 Spin",
  journal =      j-IJQC,
  volume =       "41",
  number =       "1",
  pages =        "213--242",
  day =          "5",
  month =        jan,
  year =         "1992",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560410117",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  abstract =     "Some problems in elementary geometry are approached
                 from the point of view of linear algebra and
                 generalized to the theory of linear spaces of finite or
                 infinite dimensions having a positive definite binary
                 product. The angle between two elements of the linear
                 space is defined from the concept of length by means of
                 the cosine-theorem. A rotation is then defined as a
                 special case of a unitary transformation moving all
                 elements the same angle , except that under certain
                 circumstances, some elements may stay invariant. In the
                 former case, one speaks of a rotation around an
                 external axis, and in the latter case, of a rotation
                 around an internal axis defined by the invariant
                 elements. It is shown that the finite rotations U of
                 both types may be expressed in the simple exponential
                 form U = exp(i m), where the generator m in the former
                 case is an operator satisfying the relation m2 = 1, and
                 in the latter case, m3 = m. The structure of the group
                 of finite rotations in the former case is clarified in
                 some detail. As an illustration of the theory, some
                 applications to the three- and two-dimensional spaces
                 as well as to the theory of spin are given. The
                 coupling between the ordinary three-dimensional
                 rotations and the spinor transformations is considered
                 in somewhat greater detail.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1992:SAO,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Aspects of Objectivity and Reality in Modern
                 Science",
  journal =      j-FOUND-PHYS,
  volume =       "22",
  number =       "1",
  pages =        "41--105",
  month =        jan,
  year =         "1992",
  CODEN =        "FNDPA4",
  DOI =          "https://doi.org/10.1007/BF01883380",
  ISSN =         "0015-9018 (print), 1572-9516 (electronic)",
  ISSN-L =       "0015-9018",
  MRclass =      "81P05 (00A30 03A05 03B30 81P10)",
  MRnumber =     "94b:81009",
  MRreviewer =   "David W. Miller",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); MathSciNet database;
                 OCLC ArticleFirst database; Science Citation Index
                 database (1980--2000)",
  note =         "In honor of Sir Karl Popper.",
  abstract =     "The author comments on some developments in modern
                 science-and particularly in the quantum theory of
                 matter, which may throw some new light on certain
                 aspects of this problem",
  acknowledgement = ack-nhfb,
  fjournal =     "Foundations of Physics",
  journal-URL =  "http://link.springer.com/journal/10701",
  journalabr =   "Found. Phys.",
}

@Article{Lowdin:1992:SIH,
  author =       "P.-O. L{\"o}wdin",
  title =        "Special Issue in Honor of {Enrico Clementi}. 1.
                 Introduction",
  journal =      j-IJQC,
  volume =       "42",
  number =       "4",
  pages =        "525--526",
  month =        "????",
  year =         "1992",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560420403",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1992:SSG,
  author =       "Per-Olov L{\"o}wdin and Istv{\'a}n Mayer",
  title =        "Some Studies of the General {Hartree--Fock} Method",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "24",
  pages =        "79--114",
  year =         "1992",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60101-X",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC Contents1st database; OCR scan conversion; Science
                 Citation Index database (1980--2000)",
  URL =          "http://www.sciencedirect.com/science/article/pii/S006532760860101X",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
  journalabr =   "Advan Quantum Chem",
  tableofcontents = "History of the General Hartree--Fock Method 79 \\
                 The General Hartree--Fock Equations and Separation of
                 Space and Spin and the MO-LCAO-approach 84 \\
                 Applications of the General Hartree--Fock Theory to
                 Some Atoms and the BH Molecule 94 \\
                 A Study of the Hessians in the Hartree--Fock Scheme 103
                 \\
                 Concluding Remarks 108 \\
                 References 111",
  toc =          "History of the General Hartree--Fock Method 79;\\
                 The General Hartree--Fock Equations and Separation of
                 Space and Spin and the MO-LCAO-approach 84;\\
                 Applications of the General Hartree--Fock Theory to
                 Some Atoms and the BH Molecule 94;\\
                 A Study of the Hessians in the Hartree--Fock Scheme
                 103;\\
                 Concluding Remarks 108;\\
                 References 111",
}

@Article{Lowdin:1993:Ea,
  author =       "P.-O. L{\"o}wdin",
  title =        "Editorial",
  journal =      j-IJQC,
  volume =       "45",
  number =       "1",
  pages =        "1--??",
  year =         "1993",
  CODEN =        "IJQCB2",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Jan 3 14:24:13 MST 1996",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1993:Eb,
  author =       "P.-O. L{\"o}wdin",
  title =        "Editorial",
  journal =      j-IJQC,
  volume =       "47",
  number =       "1",
  pages =        "1--??",
  day =          "5",
  month =        jul,
  year =         "1993",
  CODEN =        "IJQCB2",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Jan 3 14:24:13 MST 1996",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1993:IJQa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Journal of Quantum Chemistry --- A
                 Journal Devoted to Quantum Theory and Computations in
                 Chemistry, Condensed Matter Physics, and Biology}:
                 Editorial --- Program and Policies",
  journal =      j-IJQC,
  volume =       "45",
  number =       "1",
  pages =        "1--2",
  month =        "????",
  year =         "1993",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560450102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Dec 18 10:37:56 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib; Science
                 Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1993:IJQb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Journal of Quantum Chemistry --- A
                 Journal Devoted to Quantum Theory and Computations in
                 Chemistry, Condensed Matter Physics, and Biology}:
                 Editorial --- Program and Policies",
  journal =      j-IJQC,
  volume =       "47",
  number =       "1",
  pages =        "1--2",
  day =          "5",
  month =        jul,
  year =         "1993",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560470102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Dec 18 10:37:53 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1993:OIT,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On Operator Inequalities as Tools in Quantum Theory",
  journal =      j-THEOR-CHIM-ACTA,
  volume =       "85",
  number =       "1--3",
  pages =        "137--153",
  month =        mar,
  year =         "1993",
  CODEN =        "TCHAAM",
  DOI =          "https://doi.org/10.1007/BF01374584",
  ISSN =         "0040-5744",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  note =         "Volume dedicated to Alberte Pullman.",
  abstract =     "A brief survey of the use of operator inequalities in
                 the modern quantum theory of matter is given. In
                 particular the Rayleigh--Ritz variation principle is
                 formulated in terms of operator inequalities, and the
                 properties of outer and inner projections of
                 self-adjoint operators and especially the molecular
                 Hamiltonian and its resolvent are discussed in some
                 detail",
  acknowledgement = ack-nhfb,
  fjournal =     "Theoretica Chimica Acta",
  journal-URL =  "http://link.springer.com/journal/214",
  journalabr =   "Theor Chim Acta",
}

@Article{Lowdin:1993:SPG,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On Some Properties of General Linear Operators",
  journal =      j-IJQC,
  volume =       "46",
  number =       "3",
  pages =        "505--510",
  month =        "????",
  year =         "1993",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560460315",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib; Science
                 Citation Index database (1980--2000)",
  note =         "Submitted to the Proc. Nobel Symposium in Uppsala Dec.
                 6--7, 1991.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1993:SRR,
  author =       "Per-Olov O. L{\"o}wdin",
  title =        "Some Remarks on the Resemblance Theorems Associated
                 with Various Orthonormalization Procedures",
  journal =      j-IJQC,
  volume =       "48",
  number =       "4",
  pages =        "225--232",
  day =          "10",
  month =        nov,
  year =         "1993",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560480403",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib; IEEE
                 INSPEC database (1968--2000); Science Citation Index
                 database (1980--2000)",
  abstract =     "A survey is given of the resemblance theorems
                 associated with various types of orthonormalization
                 procedures having different kinds of symmetry
                 properties appearing in the current literature. It is
                 shown that the proofs for the minimum properties are
                 closely connected with the fact that the Hilbert
                 Schmidt norm of an operator is always nonnegative and
                 has the lowest value equal to zero.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Mayer:1993:SCG,
  author =       "Istv{\'a}n Mayer and Per-Olov L{\"o}wdin",
  title =        "Some Comments on the General {Hartree--Fock} Method",
  journal =      j-CHEM-PHYS-LETT,
  volume =       "202",
  number =       "1--2",
  pages =        "1--6",
  day =          "15",
  month =        jan,
  year =         "1993",
  CODEN =        "CHPLBC",
  DOI =          "https://doi.org/10.1016/0009-2614(93)85341-K",
  ISSN =         "0009-2614 (print), 1873-4448 (electronic)",
  ISSN-L =       "0009-2614",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  abstract =     "A study is made of the general Hartree--Fock (GHF)
                 method, in which the basic spin-orbitals may be
                 mixtures of functions having $ \alpha $ and $ \beta $
                 spins. The existence of the solutions to the GHF
                 equations has been proven by Lieb and Simon (1977), and
                 the nature of the various types of solutions has been
                 group theoretically classified by Fukutome (1971, 1972,
                 1973, 1974, 1975). Some numerical applications using
                 Gaussian bases are carried out for some simple systems:
                 the beryllium and carbon atoms and the BH molecule.
                 Some GHF solutions of the general Fukutome-type
                 `torsional spin density waves' (TSDW) were found",
  acknowledgement = ack-nhfb,
  fjournal =     "Chemical Physics Letters",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00092614",
  journalabr =   "Chem Phys Lett",
}

@Article{Bartlett:1994:OYO,
  author =       "Rodney J. Bartlett and Erik Deumens and Per-Olov
                 L{\"o}wdin and David A. Micha and Hendrik J. Monkhorst
                 and John R. Sabin and Samuel B. Trickey and Michael C.
                 Zerner",
  title =        "On the Occasion of {Yngve {\"O}hrn}'s 60th Birthday",
  journal =      j-IJQC,
  volume =       "28",
  pages =        "3--5",
  year =         "1994",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560520803",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Dec 15 18:28:43 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1994:A,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Announcement",
  journal =      j-IJQC,
  volume =       "52",
  number =       "5",
  pages =        "1247--1247",
  year =         "1994",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560520510",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1994:IJQa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Journal of Quantum Chemistry}: a
                 journal devoted to quantum theory and computations in
                 chemistry, condensed matter physics, and biology.
                 Editorial program and policies",
  journal =      j-IJQC,
  volume =       "51",
  number =       "1",
  pages =        "1--2",
  month =        "????",
  year =         "1994",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560510102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1994:IJQb,
  author =       "P.-O. L{\"o}wdin",
  title =        "International Journal of Quantum Chemistry --- {A}
                 Journal Devoted to Quantum Theory and Computations in
                 Chemistry, Condensed Matter Physics, and Biology",
  journal =      j-IJQC,
  volume =       "49",
  number =       "1",
  pages =        "1--2",
  month =        "????",
  year =         "1994",
  CODEN =        "IJQCB2",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1994:IPS,
  author =       "Per-Olov L{\"o}wdin and Michael C. Zerner",
  title =        "Introduction to a Paper Symposium on ``The Role of
                 Quantum Chemistry as a Foundation for the Principles of
                 Chemistry''",
  journal =      j-IJQC,
  volume =       "49",
  number =       "3",
  pages =        "129--130",
  day =          "20",
  month =        jan,
  year =         "1994",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560490302",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib; Science
                 Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1994:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "25",
  pages =        "ix--x",
  year =         "1994",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60016-7",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600167",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1994:SCP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Current Problems in Theoretical Chemical Physics
                 to Be Solved",
  journal =      j-IJQC,
  volume =       "51",
  number =       "6",
  pages =        "473--485",
  month =        "????",
  year =         "1994",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560510614",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib; IEEE
                 INSPEC database (1968--2000); Science Citation Index
                 database (1980--2000)",
  note =         "Proc. Girona Congress in Theoretical Chemical Physics
                 1993.",
  abstract =     "Quantum Chemistry can today boast the fact that
                 ordinary chemists---by means of personal computers and
                 programs available---can study many theoretical
                 properties of molecules by solving the Schr{\"o}dinger
                 equation and get an advance idea of how to properly
                 arrange their experiments to find new features. For
                 small molecules, they can use ab initio programs of the
                 Hartree--Fock type, and for large molecules, they can
                 use semiempirical programs available. To achieve higher
                 accuracy and to include electron correlation properly,
                 however, one has in the ab initio approach to use
                 configurational interaction methods and giant
                 computers, whereas in the semiempirical methods, the
                 effect of correlating is often taken into account in
                 the adjustable parameters forming the basis for this
                 approach. In connection with the ab initio methods, it
                 is further emphasized that the resolvent methods
                 combined with the partitioning technique provide an
                 excellent conceptual and mathematical framework for
                 getting solutions of any accuracy desired, but that
                 most of the programming of this approach remains to be
                 done. Ordinary wave mechanics is valid at absolute zero
                 of temperature, and---in order to include such
                 important chemical concepts as temperature, entropy,
                 free energy, etc.---one has to go over to general
                 quantum theory and the Liouvillian formalism. One can
                 still start from the Coulombic Hamiltonian, but it
                 becomes of importance to include the nuclear motion
                 properly and preferably on the same level as that of
                 the electronic motion. It is further emphasized that
                 the irreversibility problem is not yet fully solved,
                 that the theory of the interaction between matter and
                 electromagnetic fields still needs some improvements,
                 and that the question of the proper introduction of
                 relativistic corrections in the quantum theoretical
                 treatment of molecular systems involving heavier atoms
                 still has a great deal to desire.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1994:SRP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Remarks on Propagators and Resolvents",
  journal =      j-THEOR-CHIM-ACTA,
  volume =       "89",
  number =       "5--6",
  pages =        "277--285",
  month =        dec,
  year =         "1994",
  CODEN =        "TCHAAM",
  DOI =          "https://doi.org/10.1007/BF01114101",
  ISSN =         "0040-5744",
  bibdate =      "Fri Dec 15 19:35:28 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  note =         "Special issue in honor of Jan Linderberg, 27 October
                 1934 --.",
  acknowledgement = ack-nhfb,
  fjournal =     "Theoretica Chimica Acta",
  journal-URL =  "http://link.springer.com/journal/214",
  journalabr =   "Theor Chim Acta",
  note-2 =       "Jan Linderberg and Yngve {\"O}hrn dedicatory paper.",
}

@Article{Zerner:1994:IPS,
  author =       "M. C. Zerner and P.-O. L{\"o}wdin",
  title =        "Introduction to a Paper Symposium on {``The Role of
                 Quantum Chemistry as a Foundation for the Principles of
                 Chemistry''}",
  journal =      j-IJQC,
  volume =       "49",
  number =       "3",
  pages =        "129--??",
  day =          "20",
  month =        jan,
  year =         "1994",
  CODEN =        "IJQCB2",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Jan 3 14:24:13 MST 1996",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1995:FLC,
  author =       "Per-Olov L{\"o}wdin",
  title =        "On Fundamentals, Logic, and the Connection Between the
                 Natural Sciences",
  journal =      j-IJQC,
  volume =       "53",
  number =       "1",
  pages =        "97--103",
  month =        "????",
  year =         "1995",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560530114",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "Compendex database;
                 http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib; Science
                 Citation Index database (1980--2000)",
  note =         "Submitted to the Proc. Nobel Symposium in Uppsala Dec.
                 8, 1991.",
  abstract =     "The importance of deductive theories in the modern
                 natural sciences built essentially on experiments is
                 briefly discussed. The logical structure of the
                 deductive theories, their axioms, undefined quantities,
                 and realizations is treated in some detail. In all the
                 natural sciences, there is a striving to explain all
                 the various phenomena in nature in terms of a few basic
                 principles, and this reductionism leads to a certain
                 amount of unification of these sciences. The chain that
                 goes from biology, over molecular biology,
                 biochemistry, chemistry, and physics to the description
                 of nature in terms of the elementary particles obeying
                 the laws of modern quantum chemistry is reviewed. Since
                 all the measurements of microcosmos involve an
                 observer, who according to the Copenhagen school
                 experiences the outside universe as a projection on his
                 or her mind through his or her senses, some
                 theoreticians may be inclined to reduce the natural
                 sciences to the human mind as the fundamental
                 (undefined) quantity. However, since the observer is a
                 biological structure, one is also back where one
                 started, and it is evident that one can start the
                 reduction or unification of the natural sciences in any
                 point on this circle (or spiral). Hence, there are many
                 descriptions of the natural sciences and their
                 connections that are possible as illustrated at this
                 symposium.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quant Chem",
  journalabr-2 = "Int J Quantum Chem",
}

@Article{Lowdin:1995:HDE,
  author =       "Per-Olov L{\"o}wdin",
  title =        "The Historical Development of the Electron Correlation
                 Problem",
  journal =      j-IJQC,
  volume =       "55",
  number =       "2",
  pages =        "77--102",
  month =        "????",
  year =         "1995",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560550203",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Tue Dec 19 07:09:07 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib; IEEE
                 INSPEC database (1968--2000); Science Citation Index
                 database (1980--2000)",
  note =         "Proceedings of the meeting on ``Electron Correlation
                 in Atoms and Molecules: New Methods and Applications'',
                 Smolenice Castle, Bratislava, Slovakia, 14--18 June
                 1994.",
  abstract =     "A brief review is given of the historical development
                 of the treatment of the correlation problem in solving
                 the Schr{\"o}dinger equation in modem quantum theory
                 from the early 1930s up to now. The correlation energy
                 for a specific state of a system is defined as the
                 difference {$ E_{\mbox {corr}} = E - E_{\hbox {HF}} $}
                 between the exact eigenvalue {$E$} and the
                 Hartree--Fock energy {$ E_{\hbox {HF}} $} of the same
                 Hamiltonian for the state under consideration. From the
                 concepts of the ``Different Orbitals for Different
                 Spins'' (DODS) and the ``Alternant Molecular Orbital''
                 (AMO) methods introduced in the 1950s, the study goes
                 to the use of transition formulas-instead of
                 expectation values-for the Hamiltonian and the
                 possibility to express the correlation energy exactly
                 in terms of ``double excitations'' or pair functions.
                 The main emphasis is then put on the concept of wave
                 and reaction operators and the formulation of the
                 results of infinite-order perturbation theory in terms
                 of such operators. The partitioning technique offers a
                 simple way to derive these operators and to explore the
                 resolvent or propagator methods in greater detail, and
                 it replaces the original Schr{\"o}dinger equation with
                 its degeneracies and multiple roots by a reduced
                 characteristic equation having only single roots, which
                 is often a great simplification. Special attention is
                 given the treatment of Schr{\"o}dinger's perturbation
                 theory in view of the importance of the linked-cluster
                 theorem in the applications. In the study of the
                 splitting of degenerate levels due to a perturbation,
                 the use of the multidimensional partitioning technique
                 utilizing the concept of an energy-independent wave
                 operator is also discussed. Some developments in the
                 coupled-cluster methods are further briefly reviewed.
                 Since all quantum mechanical calculations going beyond
                 the Hartree--Fock method imply a certain treatment of
                 the correlation problem, a brief survey is also given
                 of the progress in computational quantum theory,
                 particularly in current quantum chemistry",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1995:IJQa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Journal of Quantum Chemistry}: a
                 journal devoted to quantum theory and computations in
                 chemistry, condensed matter physics, and biology.
                 Editorial program and plicies",
  journal =      j-IJQC,
  volume =       "53",
  number =       "1",
  pages =        "1--2",
  month =        "????",
  year =         "1995",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560530102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1995:IJQb,
  author =       "P.-O. L{\"o}wdin",
  title =        "International Journal of Quantum Chemistry --- {A}
                 Journal Devoted to Quantum Theory and Computations in
                 Chemistry, Condensed Matter Physics, and Biology",
  journal =      j-IJQC,
  volume =       "56",
  number =       "1",
  pages =        "1--2",
  day =          "5",
  month =        oct,
  year =         "1995",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560560102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1995:IJQc,
  author =       "Per-Olov L{\"o}wdin",
  title =        "International Journal of Quantum Chemistry --- {A}
                 Journal Devoted to Quantum Theory and Computations in
                 Chemistry, Condensed Matter Physics, and Biology",
  journal =      j-IJQC,
  volume =       "54",
  number =       "1",
  pages =        "1--2",
  month =        "????",
  year =         "1995",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560540102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1995:IJQd,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Journal of Quantum Chemistry}: a
                 journal devoted to quantum theory and computations in
                 chemistry, condensed matter physics, and biology.
                 Editorial program and policies",
  journal =      j-IJQC,
  volume =       "55",
  number =       "1",
  pages =        "1--2",
  month =        "????",
  year =         "1995",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560550102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1995:IJQe,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Journal of Quantum Chemistry}: a
                 journal devoted to Quantum theory and computations in
                 chemistry, condensed matter physics, and biology",
  journal =      j-IJQC,
  volume =       "56",
  number =       "1",
  pages =        "1--2",
  year =         "1995",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560560102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1995:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "26",
  pages =        "ix--x",
  year =         "1995",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60109-4",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608601094",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1995:SRP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Recent Progress in the Quantum Theory of
                 Molecular Spectra",
  journal =      "????",
  volume =       "??",
  number =       "??",
  pages =        "??--??",
  year =         "1995",
  bibdate =      "Fri Nov 17 11:28:02 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Contribution to the Nagakura Symposium in Hayama,
                 Japan, Oct. 22--26, 1995. To be published in Japan.",
  acknowledgement = ack-nhfb,
  xxnote =       "Where was this published??",
}

@Article{Lowdin:1996:IJQa,
  author =       "Per-Olov L{\"o}wdin",
  title =        "International Journal of Quantum Chemistry --- {A}
                 Journal Devoted to Quantum Theory and Computations in
                 Chemistry, Condensed Matter Physics, and Biology",
  journal =      j-IJQC,
  volume =       "58",
  number =       "1",
  pages =        "1--2",
  month =        "????",
  year =         "1996",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560580102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  abstract =     "No Abstracts.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1996:IJQb,
  author =       "Per-Olov L{\"o}wdin",
  title =        "{International Journal of Quantum Chemistry}: a
                 journal devoted to quantum theory and computations in
                 chemistry, condensed matter physics, and biology.
                 Editorial program and policies",
  journal =      j-IJQC,
  volume =       "59",
  number =       "1",
  pages =        "1--2",
  month =        "????",
  year =         "1996",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560590102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1996:MJL,
  author =       "Per-Olov L{\"o}wdin",
  title =        "In Memory of {Jean-Louis Calais}",
  journal =      j-IJQC,
  volume =       "57",
  number =       "1",
  pages =        "1--2",
  month =        "????",
  year =         "1996",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560570102",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib; Science
                 Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1996:P,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Preface",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "27",
  pages =        "xi--xii",
  year =         "1996",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60249-X",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S006532760860249X",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Lowdin:1996:SCP,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Comments on the Properties of Unitary
                 Transformations on Linear Spaces Having an Indefinite
                 Metric and the Connection with the Theory of Spin",
  journal =      j-IJQC,
  volume =       "58",
  number =       "6",
  pages =        "549--568",
  month =        "????",
  year =         "1996",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/(SICI)1097-461X(1996)58:6<549::AID-QUA2>3.0.CO%3B2-Y",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib;
                 http://www3.interscience.wiley.com/journalfinder.html;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  note =         "Paper based on a Lecture given at the Symposium on
                 ``The Chemical Bond'', in Copenhagen, Denmark, in honor
                 of Jens Peder Dahl's 60th Birthday, July 28--29,
                 1994.",
  URL =          "http://www3.interscience.wiley.com/cgi-bin/abstract?ID=60513",
  abstract =     "After a brief review of the history of the discovery
                 of the spin, some fundamental properties of linear
                 spaces having an indefinite metric are being discussed.
                 The study starts with an elementary survey of the
                 theory of matrices and their stability problem. It is
                 emphasized that by a similarity transformation all
                 matrices may be brought to classical canonical form
                 characterized by the diagonal elements called
                 eigenvalues, their multiplicities, their Jordan blocks,
                 and their Segr{\'e} characteristics. In connection with
                 the reduced Cayley--Hamilton equation, the existence of
                 the product projection operators and their main
                 properties is briefly discussed. Particular attention
                 is paid to the concept of a basis for the linear space
                 and the associated metric matrix, which is self-adjoint
                 and may be brought to diagonal form with the
                 eigenvalues $ \pm 1 $ by a unitary transformation,
                 which reveals the indices of inertia, p and q. The
                 Minkowski space having $ p = 3 $ and $ q = 1 $ is used
                 as an example. After this introduction, some properties
                 of linear operators defined on an indefinite space are
                 discussed, and it is pointed out that self-adjoint
                 operators and unitary operators may now have a rather
                 peculiar and unexpected behavior, and the special
                 Lorentz transformations are used as an example. It is
                 then shown that these features are of essential
                 importance in studying rotations as special cases of
                 unitary transformations defined on an indefinite space.
                 The rotations are here defined by means of their
                 reduced Cayley--Hamilton equation, and their properties
                 are studied by means of the associated product
                 projection operators, which are idempotent, mutually
                 exclusive, and form a resolution of the identity. In a
                 previous article, it was shown that, in a positive
                 definite space, there is a close connection between the
                 requirement that all rotations around an external axis
                 form a group and the existence of an anticommutator
                 algebra leading to the concept of spinors. The
                 rotations are expressed in the exponential form {$ U =
                 \exp (i O) $}, where {$O$} is a self-adjoint operator
                 which is independent of any choice basis, coordinate
                 system, etc., and which is, hence, a true invariant. It
                 is shown that this approach may now be extended also to
                 indefinite spaces and may lead to operators O which are
                 both rotationally and relativistically invariant. In
                 this connection, the full Lorentz transformations are
                 given a particularly simple form. The article may be
                 considered as a simple exercise in linear algebra, in
                 which the mathematical connection between the concept
                 of rotations and the existence of spinors is strongly
                 emphasized.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1996:SPL,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Properties of Linear Functionals and Adjoint
                 Operators",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "27",
  pages =        "371--397",
  year =         "1996",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60255-5",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC Contents1st database; OCR scan conversion",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608602555",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
  tableofcontents = "Introduction 372 \\
                 1. Some Properties of Linear Functionals 372 \\
                 2. Mappings of the Dual Space $A^d$ on the Original
                 Space $A$ 379 \\
                 3. Mapping of the Dual Space $A^d$ on Another Linear
                 Space 389 \\
                 4. Mapping of a Space $A = \{x\}$ on Another Space $B =
                 \{y\}$ 393 \\
                 References 397",
  toc =          "Introduction 372;\\
                 1. Some Properties of Linear Functionals 372;\\
                 2. Mappings of the Dual Space $A^d$ on the Original
                 Space $A$ 379;\\
                 3. Mapping of the Dual Space $A^d$ on Another Linear
                 Space 389;\\
                 4. Mapping of a Space $A = \{x\}$ on Another Space $B =
                 \{y\}$ 393;\\
                 References 397",
}

@Article{Lowdin:1997:E,
  author =       "P.-O. L{\"o}wdin and E. Br{\"a}ndas and O. Goscinski
                 and S. Lunell and J. R. Sabin and M. C. Zerner and N.
                 Y. {\"O}hrn",
  title =        "Editorial",
  journal =      j-IJQC,
  volume =       "61",
  number =       "1",
  pages =        "v--v",
  year =         "1997",
  CODEN =        "IJQCB2",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Dec 18 10:39:28 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
}

@Article{Lowdin:1997:I,
  author =       "Per-Olov L{\"o}wdin and Erkki Br{\"a}ndas and Yngve
                 {\"O}hrn and Osvaldo Goscinski and John R. Sabin and
                 Sten Lunell and Michael C. Zerner",
  title =        "Introduction",
  journal =      j-IJQC,
  volume =       "63",
  number =       "1",
  pages =        "1--2",
  year =         "1997",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/(SICI)1097-461X(1997)63:1<1::AID-QUA1>3.0.CO%3B2-#",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Tue Aug 3 08:32:10 MDT 1999",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib;
                 http://www3.interscience.wiley.com/journalfinder.html",
  note =         "Special issue in memory of Jean-Louis Calais (Part I
                 of III). [Parts II and III appear as numbers 2 and 3 of
                 this volume, {\bf 63}.].",
  URL =          "http://www3.interscience.wiley.com/cgi-bin/abstract?ID=42552;
                 http://www3.interscience.wiley.com/cgi-bin/fulltext?ID=42552&PLACEBO=IE.pdf",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Lowdin:1997:RPV,
  author =       "P.-O. L{\"o}wdin",
  title =        "On the Representability Problem in Variational Quantum
                 Theory",
  journal =      j-ABSTR-PAP-AM-CHEM-SOC,
  volume =       "213",
  number =       "??",
  pages =        "82--COMP",
  month =        apr,
  year =         "1997",
  CODEN =        "ACSRAL",
  ISSN =         "0065-7727",
  bibdate =      "Wed Dec 13 19:08:28 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 Science Citation Index database (1980--2000)",
  acknowledgement = ack-nhfb,
  fjournal =     "Abstracts of Papers of the American Chemical Society",
  journal-URL =  "http://www.acs.org/content/acs/en/meetings/nationalmeetings/programarchive.html",
  journalabr =   "Abstr Pap Amer Chem Soc",
}

@Article{Lowdin:1997:SAD,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Aspects on the Development of the Natural
                 Sciences and Their Importance for Modern Society and
                 for Our Global Environment",
  journal =      j-IJQC,
  volume =       "64",
  number =       "2",
  pages =        "157--169",
  day =          "5",
  month =        aug,
  year =         "1997",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/(SICI)1097-461X(1997)64:2<157::AID-QUA2>3.0.CO%3B2-V",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "Compendex database;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib;
                 http://www3.interscience.wiley.com/journalfinder.html;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  note =         "Special Issue: {\em Second Triennial Congress of the
                 International Society for Theoretical Chemical
                 Physics}. Issue Edited by Se{\'a}n P. McGlynn, Kresimir
                 Rupnik, Janos Ladik.",
  URL =          "http://www3.interscience.wiley.com/cgi-bin/abstract?ID=42677;
                 http://www3.interscience.wiley.com/cgi-bin/fulltext?ID=42677&PLACEBO=IE.pdf",
  abstract =     "A brief review is given of the development of modern
                 sciences from the early 1800s to the establishment of
                 modern quantum theory around 1925 leading to modern
                 theoretical chemical physics. Special attention is
                 given to the interplay between mathematics, physics,
                 and chemistry and to show how the development in one
                 science strongly influences the development in the
                 other sciences. A special section is devoted to the
                 interplay between basic and applied research and to the
                 interesting phenomenon that one may very likely get
                 more and better technological applications if basic
                 research is left to flourish on its own. In this
                 connection, the relation between teaching and basic
                 research is also discussed. Finally, the importance of
                 modern science for the protection of our global
                 environment is briefly reviewed.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quant Chem",
  journalabr-2 = "Int J Quantum Chem",
}

@Book{Lowdin:1998:LAQ,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Linear Algebra for Quantum Theory",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xi + 458",
  year =         "1998",
  ISBN =         "0-471-19958-3 (cloth)",
  ISBN-13 =      "978-0-471-19958-8 (cloth)",
  LCCN =         "QC174.17.M35 L69 1998",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  acknowledgement = ack-nhfb,
  keywords =     "algebras, linear; quantum theory -- mathematics; set
                 theory; vector spaces",
  tableofcontents = "1. Introduction \\
                 2. Elements of Set Theory \\
                 3. Linear Spaces \\
                 4. Binary Product Spaces \\
                 5. Axioms of Quantum Theory Formulated as a Trace
                 Algebra \\
                 A. Some Elementary Theorems about Traces \\
                 B. Properties of Reality-Preserving Similarity
                 Translations \\
                 C. Some Properties of Similarity Transformations of the
                 Second Order \\
                 D. Matrix Representation of the Fundamental Units \\
                 E. Involutions of an Operator \\
                 F. Some Properties of Polar Decompositions",
}

@Article{Lowdin:1998:SAB,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Aspects on the {Bloch--Lindgren} Equation and a
                 Comparison with the Partitioning Technique",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "30",
  pages =        "415--432",
  year =         "1998",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60520-1",
  ISBN =         "0-12-034830-6",
  ISBN-13 =      "978-0-12-034830-5",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC Contents1st database; OCR scan conversion; Science
                 Citation Index database (1980--2000)",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608605201",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
  journalabr =   "Advan Quantum Chem",
}

@Book{Lowdin:1998:SCF,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some comments on the foundations of physics",
  publisher =    pub-WORLD-SCI,
  address =      pub-WORLD-SCI:adr,
  pages =        "xvi + 121",
  year =         "1998",
  ISBN =         "981-02-2913-5",
  ISBN-13 =      "978-981-02-2913-9",
  LCCN =         "QC173.58 .L69 1998",
  bibdate =      "Tue Aug 30 09:26:55 MDT 2011",
  bibsource =    "fsz3950.oclc.org:210/WorldCat;
                 http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  abstract =     "This pedagogical monograph describes some of the
                 fundamental views of the laws of physics. The
                 derivations are, however, obtained from a rather
                 unconventional point of view. The Lorentz
                 transformations and the Special Theory of Relativity
                 are derived without mentioning the phenomenon of light,
                 and the de Broglie relations in the wave-corpuscle
                 parallelism are derived without the help of Planck's
                 constant. By the use of Schr{\"o}dinger's idea of
                 ``quantization as an eigenvalue problem'', the
                 foundations of wave mechanics are discussed as a
                 mathematical problem without reference to Planck's
                 constant. Finally, the Kepler problem in the special
                 theory of relativity is studied starting from the
                 energy law, and the applications to the Hulse--Taylor
                 binary pulsar indicate that more data about the unseen
                 companion are needed before the interpretation of the
                 present data may be taken as the ultimate proof of the
                 validity of the General Theory of Relativity.",
  acknowledgement = ack-nhfb,
  author-dates = "1916--2000",
  subject =      "Relativity (Physics); Relativit\'e (physique)",
  tableofcontents = "The origin of the Lorentz-transformations and the
                 Special Theory of Relativity \\
                 On the origin of the De Broglie relations and the
                 wave--corpuscle parallelism \\
                 Quantization as an eigenvalue problem for a classical
                 wave in a relativistic framework \\
                 The Kepler problem in the Special Theory of Relativity
                 with some applications to the Hulse--Taylor's binary
                 pulsar",
}

@Article{Lowdin:1999:CBS,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Connection Between Semi-Empirical and Ab Initio
                 Methods in the Quantum Theory of Molecular Electronic
                 Spectra",
  journal =      j-IJQC,
  volume =       "72",
  number =       "4",
  pages =        "379--391",
  month =        "????",
  year =         "1999",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/(SICI)1097-461X(1999)72:4<379::AID-QUA22>3.0.CO%3B2-U",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Dec 16 10:40:43 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc.bib;
                 http://www3.interscience.wiley.com/journalfinder.html;
                 IEEE INSPEC database (1968--2000); Science Citation
                 Index database (1980--2000)",
  note =         "Special Issue: {\em In Honor of Lionel Goodman}. Issue
                 Edited by Michael Kasha.",
  URL =          "http://www3.interscience.wiley.com/cgi-bin/abstract?ID=40006316;
                 http://www3.interscience.wiley.com/cgi-bin/fulltext?ID=40006316&PLACEBO=IE.pdf",
  abstract =     "In the beginning of the modern quantum theory of
                 atomic and molecular spectra, the semi-empirical
                 methods were exceedingly successful in explaining the
                 structure of the spectra and their general properties,
                 and it was hence somewhat of a surprise that, when the
                 fundamental semi-empirical parameters were later
                 calculated by ab initio methods, one would always find
                 rather different numerical values. A brief review is
                 given of this problem, and some simplified mathematical
                 derivations are introduced. The various concepts of
                 wave operators used in modern quantum theory are
                 discussed, and, after studying the energy-dependent
                 wave operators obtained by the standard partitioning
                 technique, particular attention is devoted to the
                 energy-independent wave operators and the nonlinear
                 form of the Schr{\"o}dinger equation. After studying
                 the solution of the nonlinear Bloch equation and the
                 Bloch-Lindgren equation, the concept of the model
                 Hamiltonian is reviewed, and on this basis the
                 connection between the semi-empirical approach and the
                 ab initio methods is discussed. Reference is made to
                 the fundamental comparison work carried out by Karl
                 Freed and his associates in Chicago. Some difficulties
                 remaining are briefly mentioned",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quantum Chem",
  keywords =     "semi-empirical methods, ab initio methods, wave
                 operators, effective Hamiltonian, model functions",
}

@Article{Lowdin:19xx:SAD,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Aspects on the Development of the Natural
                 Sciences and Their Importance for Modern Society",
  journal =      "????",
  volume =       "??",
  number =       "??",
  pages =        "??--??",
  year =         "19xx",
  bibdate =      "Fri Nov 17 11:27:00 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Paper prepared for publication by the National Science
                 Council of ROC, Taiwan.",
  acknowledgement = ack-nhfb,
  xxnote =       "Where was this published??",
}

@Article{Lowdin:19xx:SPL,
  author =       "Per-Olov L{\"o}wdin",
  title =        "Some Properties of Linear Functionals and Adjoint
                 Operators",
  journal =      "????",
  volume =       "??",
  number =       "??",
  pages =        "??--??",
  year =         "19xx",
  bibdate =      "Fri Nov 17 11:21:39 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Ready for publication.",
  acknowledgement = ack-nhfb,
  xxnote =       "Where was this published??",
}

@Misc{Lowdin:19xx:STLa,
  author =       "P.-O. L{\"o}wdin",
  title =        "Set Theory and Linear Algebra --- Some Mathematical
                 Tools To Be Used in Quantum Theory",
  pages =        "150 (est.)",
  year =         "19xx",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  note =         "Unpublished book manuscript.",
  acknowledgement = ack-nhfb,
  remark =       "Undated; latest reference cited is from 1974.",
}

@TechReport{Lowdin:19xx:STLb,
  author =       "P.-O. L{\"o}wdin",
  title =        "Set Theory and Linear Algebra --- Some Mathematical
                 Tools To Be Used --- Binary Product Spaces, and Their
                 Operators, {Part II}",
  type =         "Technical Report",
  number =       "TN 491",
  institution =  inst-KKUU,
  address =      inst-KKUU:adr,
  pages =        "??",
  year =         "19xx",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  acknowledgement = ack-nhfb,
}

@Unpublished{Slater:19xx:B,
  author =       "J. C. Slater and H. Yoshizumi and P.-O. L{\"o}wdin",
  title =        "Bibliographies",
  year =         "19xx",
  bibdate =      "Thu Nov 16 12:07:42 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 nhfb-allref.bib",
  note =         "Uppsala and Florida use only.",
  acknowledgement = ack-nhfb,
}

@Article{Lowdin:2001:QTC,
  author =       "P. O. L{\"o}wdin",
  title =        "Quantum theory of cohesive properties of solids",
  journal =      j-ADV-PHYS,
  volume =       "50",
  number =       "6",
  pages =        "597--756",
  month =        sep,
  year =         "2001",
  CODEN =        "ADPHAH",
  DOI =          "https://doi.org/10.1080/00018730110102196",
  ISSN =         "0001-8732 (print), 1460-6976 (electronic)",
  ISSN-L =       "0001-8732",
  bibdate =      "Mon Jun 10 15:21:57 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Advances in physics",
  journal-URL =  "http://www.tandfonline.com/loi/tadp20",
}

@InBook{Lowdin:2007:CPM,
  author =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Chemical Physics",
  title =        "Correlation Problem in Many-Electron Quantum Mechanics
                 {I}. Review of Different Approaches and Discussion of
                 Some Current Ideas",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "207--322",
  year =         "2007",
  DOI =          "https://doi.org/10.1002/9780470143483.ch7",
  ISBN =         "0-470-14348-7",
  ISBN-13 =      "978-0-470-14348-3",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  keywords =     "Schr{\"o}dinger equation, coulomb correlation,
                 correlation energy, Hartree-Fock scheme, electronic
                 correlation",
  tableofcontents = "Introduction \\
                 Formulation of the Correlation Problem \\
                 Methods for Treating Electronic Correlation \\
                 Recent Developments; Concluding Remarks",
}

@InBook{Lowdin:2007:SABb,
  author =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Chemical Physics",
  title =        "Some Aspects of the Biological Problems of Heredity,
                 Mutations, Aging, and Tumours in View of the Quantum
                 Theory of the {DNA} Molecule",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "177--179",
  year =         "2007",
  DOI =          "https://doi.org/10.1002/9780470143544.ch10",
  ISBN =         "0-470-14354-1",
  ISBN-13 =      "978-0-470-14354-4",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  keywords =     "heredity, mutation, aging, quantum theory, DNA
                 molecule",
}

@InBook{Lowdin:2007:SAC,
  author =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Chemical Physics",
  title =        "Some Aspects on the Correlation Problem and Possible
                 Extensions of the {Independent-Particle Model}",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "283--340",
  year =         "2007",
  DOI =          "https://doi.org/10.1002/9780470143599.ch9",
  ISBN =         "0-470-14359-2",
  ISBN-13 =      "978-0-470-14359-9",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  keywords =     "correlation problem, hartree-fock scheme, perturbation
                 theory, Brueckner scheme, independent-particle model",
  tableofcontents = "Correlation Problem: Introduction \\
                 Brief Survey of the Hartree-Fock Scheme \\
                 Fundamentals of Perturbation Theory: Wave and Reaction
                 Operators \\
                 Correlation Energy as a Perturbation Effect \\
                 Brueckner Scheme and the Exact SCF Method \\
                 Explicit Formulae for Wave and Reaction Operators
                 Obtained by Partitioning Technique \\
                 Treatment of Symmetry Properties in the
                 Independent-Particle Model \\
                 Treatment of Symmetry Properties in Perturbation
                 Theory",
}

@InBook{Lowdin:2007:SRDa,
  author =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Chemical Physics",
  title =        "Some Recent Developments in the Quantum Theory of
                 Many-Electron Systems and the Correlation Problem",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "2--4",
  year =         "2007",
  DOI =          "https://doi.org/10.1002/9780470143544.ch1",
  ISBN =         "0-470-14354-1",
  ISBN-13 =      "978-0-470-14354-4",
  bibdate =      "Sat Jun 11 12:07:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  keywords =     "many-electron systems, correlation problem, quantum
                 theory, wave operator, partitioning technique",
}

@Book{Lowdin:1964:AQC,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "1",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xi + 385",
  pages =        "xi + 385",
  year =         "1964",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60369-X",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.1",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S006532760860369X",
  acknowledgement = ack-nhfb,
  remark =       "First in a series of almost yearly volumes, with
                 multiple volumes in some years. Volume 38 appeared in
                 2000.",
  remark =       "First in a series of almost yearly volumes, with
                 multiple volumes in some years. Volume 38 appeared in
                 2000 and volume 62 in 2011.",
  titleabr =     "Adv. quantum chem.",
}

@Book{Lowdin:1964:MOC,
  editor =       "Per-Olov L{\"o}wdin and Bernard Pullman",
  booktitle =    "Molecular Orbitals in Chemistry, Physics, and Biology:
                 {A} Tribute to {R. S. Mulliken}",
  title =        "Molecular Orbitals in Chemistry, Physics, and Biology:
                 {A} Tribute to {R. S. Mulliken}",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  pages =        "xiii + 578",
  year =         "1964",
  LCCN =         "QD461 .L872 1964",
  bibdate =      "Sat Jul 25 13:55:27 1998",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/s/slater-john-clarke.bib;
                 https://www.math.utah.edu/pub/tex/bib/master.bib;
                 LOCATORplus database; University of California MELVYL
                 catalog",
  acknowledgement = ack-nhfb,
  keywords =     "molecular orbitals; Robert Sanderson Mulliken",
  tableofcontents = "Contributors / / v \\
                 Preface / / ix \\
                 R. S. Mulliken --- His Work and Influence on Quantum
                 Chemistry / C. A. Coulson / 1 \\
                 Robert Mulliken of Newburyport / John C. Slater / 17
                 \\
                 Recent Advances in the Quantum-Mechanical Calculation
                 of the Properties of Molecules / Robert G. Parr / 21
                 \\
                 Molecular Orbitals in the Exact SCF Theory / Per-Olov
                 L{\"o}wdin / 37 \\
                 Self-Consistent Field Methods for Open-Shell Molecules
                 / G. Berthier / 57 \\
                 The Self-Consistent Field Molecular Orbital Theory: An
                 Elementary Approach / Massimo Simonetta and Ermanno
                 Gianinetti / 83 \\
                 The Symmetry Groups of Nonrigid Molecules / H. C.
                 Longuet-Higgins / 113 \\
                 Group Theory and the Molecular Orbital Method / Josiane
                 Serre / 133 \\
                 Rydberg Orbitals and Energies for H$_2^*$ / F. A.
                 Matsen and J. C. Browne / 151 \\
                 The Molecular Orbital Interpretation of Bond-Length
                 Changes Following Excitation and Ionization of Diatomic
                 Molecules / A. C. Hurley / 161 \\
                 An Explanation of Walsh's Rules Using United-Atom
                 Molecular Orbitals / Werner A. Bingel / 191 \\
                 The Structure of Methylene and Methyl / Linus Pauling /
                 207 \\
                 Two Center Electron Interaction Energies / Klaus
                 Ruedenberg / 215 \\
                 The Nature of the Two-Electron Chemical Bond. VI.
                 Natural Orbital Analysis for HeH$^+$ / Basil G. Anex
                 and Harrison Shull / 227 \\
                 Electronic Structure and Absorption Spectra of the
                 Nitrate Ion / S. J. Strickler and M. Kasha / 241 \\
                 A Study of Cl- and HCl by a Factorization Technique of
                 Density Matrix in the SCF LCAO-MO Method / Eolo Scrocco
                 and Jacopo Tomasi / 263 \\
                 Energy Calculations for Polyatomic Carbon Molecules /
                 S. J. Strickler and Kenneth S. Pitzer / 281 \\
                 Rotational Structure of the Fundamental Band $\nu_6$ of
                 Methyl Cyanide / G. Amal and H. H. Nielsen / 293 \\
                 The Self-Consistent Generalization of H{\"u}ckel Theory
                 / R. McWeeny / 305 \\
                 The Resonance Formulation of Electronically Excited
                 $\pi$-Electron States / E. Heilbronner / 329 \\
                 A General Scheme for the Determination of Semiempirical
                 Parameters in the Molecular Orbital Theory of
                 Conjugated Systems / Inga Fischer-Hjalmars / 361 \\
                 Resonance Among Molecular Orbital Configurations /
                 William T. Simpson / 385 \\
                 Electron Correlation in $\pi$-Electron Systems / Alice
                 L. H. Chung, Michael J. S. Dewar, and Nora L. Sabelli /
                 395 \\
                 Self-Consistent Equations for Localized Orbitals in
                 Polyatomic Systems / T. L. Gilbert / 405 \\
                 $\pi$-Electron Conjugation in Some Polyphenyl Molecules
                 / Takashi Nakamura, Sook-il Kwun, and Henry Eyring /
                 421 \\
                 The Alternant Molecular Orbital Method and the
                 Correlation Problem / Ruben Pauncz / 433 \\
                 Molecular Orbital Calculations and the Aromaticity of
                 Some Nonbenzenoid Aromatic Hydrocarbons / Takeshi
                 Nakajima / 451 \\
                 On the Scaling Factor for MO Calculated Spectral
                 Intensities / G. J. Hoijtink / 471 \\
                 Application of the Molecular Orbitals to the Study of
                 the Base Strength / Odilon Chalvet, Raymond Daudel, and
                 Federico Peradejordi / 475 \\
                 Molecular Orbital Calculations and Electrophilic
                 Substitution / R. D. Brown / 485 \\
                 A Simple Quantum-Theoretical Interpretation of the
                 Chemical Reactivity of Organic Compounds / Kenichi
                 Fukui / 513 \\
                 A Formal Theory of Rydberg Series of Molecules / Masao
                 Kotani / 539 \\
                 $\pi$-Molecular Orbitals and the Processes of Life /
                 Alberte Pullman and Bernard Pullman / 547 \\
                 Index / 573",
}

@Book{Lowdin:1965:AQC,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "2",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xi + 372",
  pages =        "xi + 372",
  year =         "1965",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60066-0",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.2",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600660",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1966:QTA,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Quantum theory of atoms, molecules, and the solid
                 state: a tribute to {John C. Slater}",
  title =        "Quantum theory of atoms, molecules, and the solid
                 state: a tribute to {John C. Slater}",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  pages =        "xvi + 641",
  year =         "1966",
  LCCN =         "QC174.1 .L827 1966 335",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  acknowledgement = ack-nhfb,
  keywords =     "quantum theory -- addresses, essays, lectures; Slater,
                 John Clarke, 1900--1976",
}

@Book{Lowdin:1967:AQC,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "3",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xiv + 392",
  pages =        "xiv + 392",
  year =         "1967",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60080-5",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.3",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600805",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1968:AQC,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "4",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xiv + 334",
  pages =        "xiv + 334",
  year =         "1968",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60385-8",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.4",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608603858",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1970:AQC,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "5",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xv + 303",
  pages =        "xv + 303",
  year =         "1970",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60331-7",
  ISBN =         "0-12-034805-5 (hardcover)",
  ISBN-13 =      "978-0-12-034805-3 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.5",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608603317;
                 http://www.sciencedirect.com/science/book/9780120348053",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1972:AQC,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "6",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xvi + 413",
  pages =        "xvi + 413",
  year =         "1972",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60537-7",
  ISBN =         "0-12-034806-3 (hardcover)",
  ISBN-13 =      "978-0-12-034806-0 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.6",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608605377;
                 http://www.sciencedirect.com/science/book/9780120348060",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1973:AQC,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "7",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xvi + 457",
  pages =        "xvi + 457",
  year =         "1973",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60554-7",
  ISBN =         "0-12-034807-1 (hardcover)",
  ISBN-13 =      "978-0-12-034807-7 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.7",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608605547;
                 http://www.sciencedirect.com/science/book/9780120348077",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1974:AQC,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "8",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xvii + 291",
  pages =        "xvii + 291",
  year =         "1974",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60053-2",
  ISBN =         "0-12-034808-X (hardcover)",
  ISBN-13 =      "978-0-12-034808-4 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.8",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600532;
                 http://www.sciencedirect.com/science/book/9780120348084",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1975:AQC,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "9",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "x + 304",
  pages =        "x + 304",
  year =         "1975",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60034-9",
  ISBN =         "0-12-034809-8 (hardcover)",
  ISBN-13 =      "978-0-12-034809-1 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.9",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600349;
                 http://www.sciencedirect.com/science/book/9780120348091",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1977:AQC,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "10",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xii + 338",
  pages =        "xii + 338",
  year =         "1977",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60573-0",
  ISBN =         "0-12-034810-1 (hardcover)",
  ISBN-13 =      "978-0-12-034810-7 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.10",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608605730;
                 http://www.sciencedirect.com/science/book/9780120348107",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1978:AQC,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "11",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xii + 487",
  pages =        "xii + 487",
  year =         "1978",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60228-2",
  ISBN =         "0-12-034811-X (hardcover)",
  ISBN-13 =      "978-0-12-034811-4 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.11",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608602282;
                 http://www.sciencedirect.com/science/book/9780120348114",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1980:AQC,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "12",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "x + 325",
  pages =        "x + 325",
  year =         "1980",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60308-1",
  ISBN =         "0-12-034812-8 (hardcover)",
  ISBN-13 =      "978-0-12-034812-1 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.12",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608603081;
                 http://www.sciencedirect.com/science/book/9780120348121",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1981:AQCa,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "13",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "x + 251",
  pages =        "x + 251",
  year =         "1981",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60287-7",
  ISBN =         "0-12-034813-6 (hardcover)",
  ISBN-13 =      "978-0-12-034813-8 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.13",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608602877;
                 http://www.sciencedirect.com/science/book/9780120348138",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1981:AQCb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "14",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "x + 248",
  pages =        "x + 248",
  year =         "1981",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60321-4",
  ISBN =         "0-12-034814-4 (hardcover)",
  ISBN-13 =      "978-0-12-034814-5 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.14",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608603214;
                 http://www.sciencedirect.com/science/book/9780120348145",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1982:AQCa,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "15",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "x + 277",
  pages =        "x + 277",
  year =         "1982",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60117-3",
  ISBN =         "0-12-034815-2 (hardcover)",
  ISBN-13 =      "978-0-12-034815-2 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.15",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608601173;
                 http://www.sciencedirect.com/science/book/9780120348152",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1982:AQCb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "16",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "x + 285",
  pages =        "x + 285",
  year =         "1982",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60346-9",
  ISBN =         "0-12-034816-0 (hardcover)",
  ISBN-13 =      "978-0-12-034816-9 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.16",
  bibdate =      "Thu Nov 16 17:18:28 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608603469;
                 http://www.sciencedirect.com/science/book/9780120348169",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1985:AQC,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "17",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "x + 344",
  pages =        "x + 344",
  year =         "1985",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60297-X",
  ISBN =         "0-12-034817-9 (hardcover)",
  ISBN-13 =      "978-0-12-034817-6 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.17",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S006532760860297X;
                 http://www.sciencedirect.com/science/book/9780120348176",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1986:AQC,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "18",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "viii + 350",
  pages =        "viii + 350",
  year =         "1986",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60044-1",
  ISBN =         "0-12-034818-7 (hardcover)",
  ISBN-13 =      "978-0-12-034818-3 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.18",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600441;
                 http://www.sciencedirect.com/science/book/9780120348183",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1988:AQC,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "19",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xii + 365",
  pages =        "xii + 365",
  year =         "1988",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60608-5",
  ISBN =         "0-12-034819-5 (hardcover)",
  ISBN-13 =      "978-0-12-034819-0 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.19",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608606085;
                 http://www.sciencedirect.com/science/book/9780120348190",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1989:AQC,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "20",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xiii + 453",
  pages =        "xiii + 453",
  year =         "1989",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60621-8",
  ISBN =         "0-12-034820-9 (hardcover)",
  ISBN-13 =      "978-0-12-034820-6 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.20",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608606218;
                 http://www.sciencedirect.com/science/book/9780120348206",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1990:AQC,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner and Samuel B. Trickey",
  booktitle =    "Advances in Quantum Chemistry: Density functional
                 theory of many-fermion systems",
  title =        "Advances in Quantum Chemistry: Density functional
                 theory of many-fermion systems",
  volume =       "21",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xii + 405",
  pages =        "xii + 405",
  year =         "1990",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60585-7",
  ISBN =         "0-12-034821-7 (hardcover)",
  ISBN-13 =      "978-0-12-034821-3 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.21",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608605857;
                 http://www.sciencedirect.com/science/book/9780120348213",
  acknowledgement = ack-nhfb,
  annote-1 =     "This is the first volume in the series to carry a
                 subtitle on the cover page, although it is not on the
                 book spine.",
  annote-2 =     "Special Editor: Samuel B. Trickey.",
}

@Book{Lowdin:1991:AQCa,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "22",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "x + 385",
  pages =        "x + 385",
  year =         "1991",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60357-3",
  ISBN =         "0-12-034822-5 (hardcover)",
  ISBN-13 =      "978-0-12-034822-0 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.22",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608603573;
                 http://www.sciencedirect.com/science/book/9780120348220",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1992:AQCb,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "23",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "x + 363",
  pages =        "x + 363",
  year =         "1992",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60024-6",
  ISBN =         "0-12-034823-3 (hardcover)",
  ISBN-13 =      "978-0-12-034823-7 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.23",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600246;
                 http://www.sciencedirect.com/science/book/9780120348237",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1992:AQCc,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "24",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "x + 298",
  pages =        "x + 298",
  year =         "1992",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60096-9",
  ISBN =         "0-12-034824-1 (hardcover)",
  ISBN-13 =      "978-0-12-034824-4 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.24",
  bibdate =      "Tue Dec 26 12:40:24 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600969;
                 http://www.sciencedirect.com/science/book/9780120348244",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1994:AQC,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "25",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "x + 320",
  pages =        "x + 320",
  year =         "1994",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60013-1",
  ISBN =         "0-12-034825-X (hardcover)",
  ISBN-13 =      "978-0-12-034825-1 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.25",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608600131;
                 http://www.sciencedirect.com/science/book/9780120348251",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1995:AQC,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "26",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "x + 367",
  pages =        "x + 367",
  year =         "1995",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60106-9",
  ISBN =         "0-12-034826-8 (hardcover)",
  ISBN-13 =      "978-0-12-034826-8 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.26",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327608601069;
                 http://www.sciencedirect.com/science/book/9780120348268",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1996:AQC,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "27",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xii + 407",
  pages =        "xii + 407",
  year =         "1996",
  CODEN =        "AQCHA9",
  ISBN =         "0-12-034827-6 (hardcover)",
  ISBN-13 =      "978-0-12-034827-5 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.27",
  bibdate =      "Tue Dec 05 07:12:54 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 OCLC WorldCat database",
  price =        "US\$126.00",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.apcatalog.com/cgi-bin/AP?ISBN=0120348276&LOCATION=US&FORM=FORM2;
                 http://www.hbuk.co.uk/ap/;
                 http://www.sciencedirect.com/science/book/9780120348275",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1997:AQCa,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner and Jacek Karwowski and Mati Karelson",
  booktitle =    "Advances in Quantum Chemistry: Recent advances in
                 computational chemistry",
  title =        "Advances in Quantum Chemistry: Recent advances in
                 computational chemistry",
  volume =       "28",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xix + 370",
  pages =        "xix + 370",
  year =         "1997",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60197-5",
  ISBN =         "0-12-034828-4 (hardcover)",
  ISBN-13 =      "978-0-12-034828-2 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.28",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276;
                 OCLC WorldCat database",
  note =         "Papers written to honor Geerd H. F. Diercksen on his
                 60th birthday. Most of the papers were presented at the
                 symposium Recent Advances in Computational Chemistry
                 (Munich, 20--30 March 1996).",
  price =        "US\$139.95",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.apcatalog.com/cgi-bin/AP?ISBN=0120348284&LOCATION=US&FORM=FORM2;
                 http://www.hbuk.co.uk/ap/;
                 http://www.sciencedirect.com/science/article/pii/S0065327608601975;
                 http://www.sciencedirect.com/science/book/9780120348282",
  acknowledgement = ack-nhfb,
  annote-1 =     "First volume in series to carry a subtitle on the
                 spine, as well as on the cover page.",
  annote-2 =     "Guest editors: J. Karwowski and M. Karelson.",
}

@Book{Lowdin:1997:AQCb,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner and Erkki Br{\"a}ndas and Laszlo K{\"o}v{\'e}r
                 and Jun Kawai and Hirohiko Adachi",
  booktitle =    "Advances in Quantum Chemistry: Electronic structure of
                 clusters",
  title =        "Advances in Quantum Chemistry: Electronic structure of
                 clusters",
  volume =       "29",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xvi + 471",
  pages =        "xvi + 471",
  year =         "1997",
  CODEN =        "AQCHA9",
  ISBN =         "0-12-034829-2 (hardcover)",
  ISBN-13 =      "978-0-12-034829-9 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.29",
  bibdate =      "Sat Dec 30 14:27:18 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 OCLC WorldCat database",
  note =         "This volume includes the papers presented at the first
                 International Workshop on DV-X Methods. DVA-X '96 took
                 place in the ATOMKI, Debrecen, Hungary, on 2--3
                 September 1996.",
  price =        "US\$110.00",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.apcatalog.com/cgi-bin/AP?ISBN=0120348292&LOCATION=US&FORM=FORM2;
                 http://www.hbuk.co.uk/ap/;
                 http://www.sciencedirect.com/science/book/9780120348299",
  acknowledgement = ack-nhfb,
  remark =       "Guest editors: L. Lover, J. Kawai, and H. Adachi.",
}

@Book{Lowdin:1998:AQCa,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner and Erkki Br{\"a}ndas and Dag Hanstorp and Hans
                 Persson",
  booktitle =    "Advances in quantum chemistry: Modern trends in atomic
                 physics",
  title =        "Advances in quantum chemistry: Modern trends in atomic
                 physics",
  volume =       "30",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  pages =        "xiii + 506",
  year =         "1998",
  CODEN =        "AQCHA9",
  ISBN =         "0-12-034830-6",
  ISBN-13 =      "978-0-12-034830-5",
  ISSN =         "0065-3276",
  LCCN =         "QD453 .A28",
  bibdate =      "Sat Dec 30 14:27:22 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 OCLC WorldCat database",
  price =        "US\$125.00",
  URL =          "http://www.apcatalog.com/cgi-bin/AP?ISBN=0120348306&LOCATION=US&FORM=FORM2;
                 http://www.hbuk.co.uk/ap",
  acknowledgement = ack-nhfb,
  remark =       "Guest editors: D. Hanstorp and H. Persson.",
}

@Book{Lowdin:1998:AQCb,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner and Erkki Br{\"a}ndas and S. Wilson and J.
                 Maruani and Y. G. Smeyers and P. J. Grout and R.
                 McWeeny",
  booktitle =    "Advances in Quantum Chemistry: Quantum systems in
                 chemistry and physics, part {I}",
  title =        "Advances in Quantum Chemistry: Quantum systems in
                 chemistry and physics, part {I}",
  volume =       "31",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xix + 345",
  pages =        "xix + 345",
  year =         "1998",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60174-4;
                 https://doi.org/10.1016/S0065-3276(08)60175-6",
  ISBN =         "0-12-034831-4 (hardcover)",
  ISBN-13 =      "978-0-12-034831-2 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.31",
  bibdate =      "Sat Dec 30 14:27:30 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib",
  note =         "Copyright year 1999.",
  price =        "US\$99.95",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.academicpress.com/pecs/chem/serials.html;
                 http://www.apcatalog.com/cgi-bin/AP?ISBN=0120348314&LOCATION=US&FORM=FORM2;
                 http://www.hbuk.co.uk/ap/;
                 http://www.sciencedirect.com/science/article/pii/S0065327608601744;
                 http://www.sciencedirect.com/science/article/pii/S0065327608601756;
                 http://www.sciencedirect.com/science/book/9780120348312",
  acknowledgement = ack-nhfb,
  annote-1 =     "Spine says 1998, but copyright year is 1999.",
  annote-2 =     "Volume editors: Steven Wilson, J. Maruani, Y. G.
                 Smeyers, P. J. Grout and R. McWeeny.",
}

@Book{Lowdin:1998:AQCc,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner and Erkki Br{\"a}ndas and S. Wilson and J.
                 Maruani and Y. G. Smeyers and P. J. Grout and R.
                 McWeeny",
  booktitle =    "Advances in Quantum Chemistry: Quantum systems in
                 chemistry and physics, part {II}",
  title =        "Advances in Quantum Chemistry: Quantum systems in
                 chemistry and physics, part {II}",
  volume =       "32",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xix + 338",
  pages =        "xix + 338",
  year =         "1998",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60400-1",
  ISBN =         "0-12-034833-0 (hardcover)",
  ISBN-13 =      "978-0-12-034833-6 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.32",
  bibdate =      "Sat Dec 30 14:27:51 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 OCLC WorldCat database",
  price =        "US\$99.95",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.academicpress.com/pecs/chem/serials.html;
                 http://www.apcatalog.com/cgi-bin/AP?ISBN=0120348330&LOCATION=US&FORM=FORM2;
                 http://www.hbuk.co.uk/ap/;
                 http://www.sciencedirect.com/science/article/pii/S0065327608604001;
                 http://www.sciencedirect.com/science/article/pii/S0065327608604220;
                 http://www.sciencedirect.com/science/book/9780120348336",
  acknowledgement = ack-nhfb,
  remark =       "Volume editors: Steven Wilson, J. Maruani, Y. G.
                 Smeyers, P. J. Grout and R. McWeeny.",
}

@Book{Lowdin:1998:AQCd,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner and Erkki Br{\"a}ndas and Jorge M. Seminario",
  booktitle =    "Advances in Quantum Chemistry: Density functional
                 theory",
  title =        "Advances in Quantum Chemistry: Density functional
                 theory",
  volume =       "33",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xviii + 398",
  pages =        "xviii + 398",
  year =         "1998",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60422-0",
  ISBN =         "0-12-034832-2 (hardcover)",
  ISBN-13 =      "978-0-12-034832-9 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.33",
  bibdate =      "Tue Dec 05 06:32:37 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib",
  price =        "US\$120.00",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.academicpress.com/pecs/chem/serials.html;
                 http://www.apcatalog.com/cgi-bin/AP?ISBN=0120348322&LOCATION=US&FORM=FORM2;
                 http://www.hbuk.co.uk/ap/;
                 http://www.sciencedirect.com/science/book/9780120348329",
  acknowledgement = ack-nhfb,
  remark =       "Volume editor: Jorge M. Seminario",
}

@Book{Lowdin:1999:AQCa,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner and Erkki Br{\"a}ndas",
  booktitle =    "Advances in Quantum Chemistry",
  title =        "Advances in Quantum Chemistry",
  volume =       "34",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "x + 388",
  pages =        "x + 388",
  year =         "1999",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60526-2",
  ISBN =         "0-12-034834-9 (hardcover)",
  ISBN-13 =      "978-0-12-034834-3 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.34",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276",
  price =        "US\$125.00",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.academicpress.com/pecs/chem/serials.html;
                 http://www.apcatalog.com/cgi-bin/AP?ISBN=0120348349&LOCATION=US&FORM=FORM2;
                 http://www.hbuk.co.uk/ap/;
                 http://www.sciencedirect.com/science/article/pii/S0065327608605262;
                 http://www.sciencedirect.com/science/book/9780120348343",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1999:AQCb,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner and Erkki Br{\"a}ndas and J. V. Ortiz and Henry
                 Kurtz",
  booktitle =    "Advances in Quantum Chemistry: Propagating insight:
                 {A} tribute to {Yngve {\"O}hrn}",
  title =        "Advances in Quantum Chemistry: Propagating insight:
                 {A} tribute to {Yngve {\"O}hrn}",
  volume =       "35",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "x + 380",
  pages =        "x + 380",
  year =         "1999",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60448-7",
  ISBN =         "0-12-034835-7 (hardcover)",
  ISBN-13 =      "978-0-12-034835-0 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.35",
  bibdate =      "Sat Dec 30 11:08:21 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib",
  price =        "US\$145.00",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.academicpress.com/pecs/chem/serials.html;
                 http://www.apcatalog.com/cgi-bin/AP?ISBN=0120348357&LOCATION=US&FORM=FORM2;
                 http://www.hbuk.co.uk/ap/;
                 http://www.sciencedirect.com/science/article/pii/S0065327608604487;
                 http://www.sciencedirect.com/science/book/9780120348350",
  acknowledgement = ack-nhfb,
}

@Book{Lowdin:1999:AQCc,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner and Erkki Br{\"a}ndas and Alessandro Lami and
                 Vincenzo Barone",
  booktitle =    "Advances in Quantum Chemistry: From electronic
                 structure to time-dependent processes: a volume in
                 honor of {Giuseppe Del Re}",
  title =        "Advances in Quantum Chemistry: From electronic
                 structure to time-dependent processes: a volume in
                 honor of {Giuseppe Del Re}",
  volume =       "36",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xxii + 394",
  pages =        "xxii + 394",
  year =         "1999",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(08)60471-2",
  ISBN =         "0-12-034836-5 (hardcover)",
  ISBN-13 =      "978-0-12-034836-7 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.36",
  bibdate =      "Tue Dec 05 06:37:26 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 OCLC WorldCat database",
  note =         "Copyright year 2000.",
  price =        "US\$145.00",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.academicpress.com/pecs/chem/serials.html;
                 http://www.apcatalog.com/cgi-bin/AP?ISBN=0120348365&LOCATION=US&FORM=FORM2;
                 http://www.hbuk.co.uk/ap/;
                 http://www.sciencedirect.com/science/article/pii/S0065327608604712;
                 http://www.sciencedirect.com/science/book/9780120348367",
  acknowledgement = ack-nhfb,
  remark =       "Spine says 1999, but copyright year is 2000.",
}

@Book{Lowdin:2000:AQCa,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner and Erkki Br{\"a}ndas and Hirohiko Adachi and
                 Masayuki Uda and Rika Sekine",
  booktitle =    "Advances in Quantum Chemistry: {DV-X$ \alpha $} for
                 atomic spectroscopy and materials science",
  title =        "Advances in Quantum Chemistry: {DV-X$ \alpha $} for
                 atomic spectroscopy and materials science",
  volume =       "37",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xvi + 393",
  pages =        "xvi + 393",
  year =         "2000",
  CODEN =        "AQCHA9",
  ISBN =         "0-12-034837-3 (hardcover)",
  ISBN-13 =      "978-0-12-034837-4 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.37",
  bibdate =      "Sat Dec 30 14:29:09 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib",
  note =         "Copyright year 2001.",
  price =        "US\$145.00",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.academicpress.com/pecs/chem/serials.html;
                 http://www.apcatalog.com/cgi-bin/AP?ISBN=0120348373&LOCATION=US&FORM=FORM2;
                 http://www.hbuk.co.uk/ap/;
                 http://www.sciencedirect.com/science/book/9780120348374",
  acknowledgement = ack-nhfb,
  annote-1 =     "Spine says 2000, but copyright year is 2001.",
  annote-2 =     "Volume editors: H. Adachi, M. Uda, and R. Sekine.",
}

@Book{Lowdin:2000:AQCb,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner and Erkki Br{\"a}ndas",
  booktitle =    "Advances in Quantum Chemistry: From electronic
                 structure to time-dependent processes",
  title =        "Advances in Quantum Chemistry: From electronic
                 structure to time-dependent processes",
  volume =       "38",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "ix + 287",
  pages =        "ix + 287",
  year =         "2000",
  CODEN =        "AQCHA9",
  ISBN =         "0-12-034838-1 (hardcover)",
  ISBN-13 =      "978-0-12-034838-1 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.38",
  bibdate =      "Tue Dec 05 06:41:39 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib",
  price =        "US\$145.00",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.academicpress.com/pecs/chem/serials.html;
                 http://www.apcatalog.com/cgi-bin/AP?ISBN=0120348381&LOCATION=US&FORM=FORM2;
                 http://www.hbuk.co.uk/ap/;
                 http://www.sciencedirect.com/science/book/9780120348381",
  acknowledgement = ack-nhfb,
  remark =       "Subtitle on cover page says: ``a volume in honor of
                 Giuseppe Del Re'', but that is a printing error.",
}

%%% =====================================================================
%%% Part 2 (of 2): publications about Per-Olov L{\"o}wdin and/or his works
%%%
%%% Entries are sorted by year, then by citation label:

@Article{Anonymous:1959:FGL,
  author =       "Anonymous",
  title =        "{Florida} Gets {L{\"o}wdin}",
  journal =      j-CHEM-ENG-NEWS,
  volume =       "37",
  number =       "31",
  pages =        "68--??",
  day =          "3",
  month =        aug,
  year =         "1959",
  CODEN =        "CENEAR",
  DOI =          "https://doi.org/10.1021/cen-v037n031.p068",
  ISSN =         "0009-2347 (print), 1520-605x (electronic)",
  ISSN-L =       "0009-2347",
  bibdate =      "Mon Oct 10 14:35:41 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://pubs.acs.org/doi/pdf/10.1021/cen-v037n031.p068",
  acknowledgement = ack-nhfb,
  fjournal =     "Chemical and engineering news",
  journal-URL =  "http://pubs.acs.org/loi/cenear",
}

@Article{Patterson:1962:DMR,
  author =       "J. D. Patterson",
  title =        "Density Matrix Representations",
  journal =      j-AMER-J-PHYSICS,
  volume =       "30",
  number =       "12",
  pages =        "894--897",
  month =        dec,
  year =         "1962",
  CODEN =        "AJPIAS",
  DOI =          "https://doi.org/10.1119/1.1941845",
  ISSN =         "0002-9505 (print), 1943-2909 (electronic)",
  ISSN-L =       "0002-9505",
  bibdate =      "Mon Oct 10 13:02:32 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://ajp.aapt.org/resource/1/ajpias/v30/i12/p894_s1",
  abstract =     "The relations between the ordinary density matrix, the
                 density matrix in the coordinate representation, the
                 L{\"o}wdin density matrices, the Dirac density matrix,
                 and other density matrices are traced. The roles of
                 pure and mixed cases, equilibrium and nonequilibrium
                 situations, and single- and many-body representations
                 are considered.",
  acknowledgement = ack-nhfb,
  fjournal =     "American Journal of Physics",
  journal-URL =  "http://scitation.aip.org/content/aapt/journal/ajp",
}

@Article{Buckingham:1965:BRB,
  author =       "David Buckingham",
  title =        "Book Review: {{\booktitle{Molecular orbitals in
                 chemistry, physics, and biology}}, edited by Per-Olov
                 L{\"o}wdin and Bernard Pullman}",
  journal =      j-AM-SCI,
  volume =       "53",
  number =       "1",
  pages =        "116A-116A",
  month =        mar,
  year =         "1965",
  CODEN =        "AMSCAC",
  ISSN =         "0003-0996 (print), 1545-2786 (electronic)",
  ISSN-L =       "0003-0996",
  bibdate =      "Mon Oct 10 15:49:35 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://www.jstor.org/stable/27835959",
  acknowledgement = ack-nhfb,
  fjournal =     "American Scientist",
  journal-URL =  "http://www.americanscientist.org/issues/past.aspx",
}

@Article{Gray:1965:BRB,
  author =       "Harry B. Gray",
  title =        "Book Review: {{\booktitle{Molecular orbitals in
                 chemistry, physics, and biology}}, edited by Per-Olov
                 L{\"o}wdin and Bernard Pullman}",
  journal =      j-J-CHEM-EDUC,
  volume =       "42",
  number =       "3",
  pages =        "A224--??",
  month =        mar,
  year =         "1965",
  CODEN =        "JCEDA8",
  DOI =          "https://doi.org/10.1021/ed042pA224",
  ISSN =         "0021-9584 (print), 1938-1328 (electronic)",
  ISSN-L =       "0021-9584",
  bibdate =      "Mon Oct 10 14:41:10 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "See \cite{Lowdin:1964:MOC}.",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Education",
  journal-URL =  "http://pubs.acs.org/journal/jceda8",
}

@Article{Seliger:1965:BRB,
  author =       "Howard H. Seliger",
  title =        "Book Review: {{\booktitle{Molecular orbitals in
                 chemistry, physics, and biology}}, edited by Per-Olov
                 L{\"o}wdin and Bernard Pullman}",
  journal =      j-Q-REV-BIOL,
  volume =       "40",
  number =       "4",
  pages =        "418--419",
  month =        dec,
  year =         "1965",
  CODEN =        "QRBIAK",
  ISSN =         "0033-5770 (print), 1539-7718 (electronic)",
  ISSN-L =       "0033-5770",
  bibdate =      "Mon Oct 10 15:43:26 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "See \cite{Lowdin:1964:MOC}.",
  URL =          "http://www.jstor.org/stable/2819433",
  acknowledgement = ack-nhfb,
  fjournal =     "Quarterly Review of Biology",
}

@Article{Klessinger:1966:BRBa,
  author =       "M. Klessinger",
  title =        "Book Review: {{\booktitle{Molecular Orbitals in
                 Chemistry, Physics, and Biology. A Tribute to R. S.
                 Mulliken}}. Herausgeg. von P.-O. L{\"o}wdin und B.
                 Pullman. Academic Press, New York-London 1964. 1.
                 Aufl., VIII, 578 S., zahlr. Abb. u. Tab., geb. \$22}",
  journal =      j-ANGEW-CHEM,
  volume =       "78",
  number =       "2",
  pages =        "154--154",
  day =          "21",
  month =        "????",
  year =         "1966",
  CODEN =        "ANCEAD",
  DOI =          "https://doi.org/10.1002/ange.19660780219",
  ISSN =         "0044-8249 (print), 1521-3757 (electronic)",
  ISSN-L =       "0044-8249",
  bibdate =      "Mon Oct 10 16:24:33 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://onlinelibrary.wiley.com/doi/10.1002/ange.19660780219",
  acknowledgement = ack-nhfb,
  fjournal =     "Angewandte Chemie",
  journal-URL =  "http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-3757",
}

@Article{Klessinger:1966:BRBb,
  author =       "M. Klessinger",
  title =        "Book Review: {{\booktitle{Molecular Orbitals in
                 Chemistry, Physics, and Biology. A Tribute to R. S.
                 Mulliken}}. Edited By P.-O. L{\"o}wdin and B.
                 Pullman}",
  journal =      j-ANGEW-CHEM-INT-ED-ENGL,
  volume =       "5",
  number =       "1",
  pages =        "146--146",
  month =        jan,
  year =         "1966",
  CODEN =        "ACIEAY",
  DOI =          "https://doi.org/10.1002/anie.196601461",
  ISSN =         "0570-0833",
  bibdate =      "Mon Oct 10 16:36:06 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://onlinelibrary.wiley.com/doi/10.1002/anie.196601461/",
  acknowledgement = ack-nhfb,
  fjournal =     "Angewandte Chemie, International Edition in English",
  journal-URL =  "http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-3773a",
}

@Article{Parr:1966:BRB,
  author =       "Robert G. Parr",
  title =        "Book Review: {{\booktitle{Advances in quantum
                 chemistry}}, by Per-Olov L{\"o}wdin}",
  journal =      j-AM-SCI,
  volume =       "54",
  number =       "1",
  pages =        "114A-114A",
  month =        mar,
  year =         "1966",
  CODEN =        "AMSCAC",
  ISSN =         "0003-0996 (print), 1545-2786 (electronic)",
  ISSN-L =       "0003-0996",
  bibdate =      "Mon Oct 10 15:46:48 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://www.jstor.org/stable/27836334",
  acknowledgement = ack-nhfb,
  fjournal =     "American Scientist",
  journal-URL =  "http://www.americanscientist.org/issues/past.aspx",
}

@Article{Hoffman:1967:BRB,
  author =       "Joseph G. Hoffman",
  title =        "Book Review: {{\booktitle{Quantum Theory of Atoms,
                 Molecules and the Solid State: A Tribute to John C.
                 Slater}}, by Per-Olov L{\"o}wdin}",
  journal =      j-PHYS-TODAY,
  volume =       "20",
  number =       "11",
  pages =        "91--92",
  month =        nov,
  year =         "1967",
  CODEN =        "PHTOAD",
  DOI =          "https://doi.org/10.1063/1.3034040",
  ISSN =         "0031-9228 (print), 1945-0699 (electronic)",
  ISSN-L =       "0031-9228",
  bibdate =      "Mon Oct 10 14:51:06 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/s/slater-john-clarke.bib",
  URL =          "http://link.aip.org/link/?PTO/20/91/1;
                 http://www.physicstoday.org/resource/1/phtoad/v20/i11/p91_s1",
  acknowledgement = ack-nhfb,
  fjournal =     "Physics Today",
  journal-URL =  "http://www.physicstoday.org/",
}

@Article{Kanilov:1967:ESP,
  author =       "V. I. Kanilov and V. A. Kuprievich and O. V. Shramko",
  title =        "Elektronnaia struktura par osnovanii DNK v
                 vozbuzhdennykh sostoianiakh i Levdinovskii mekhanizm
                 mutasii. ({Russian}) [{The} electronic structure of
                 pair bases of {DNA} in excited states, and {Lowdin}'s
                 mutation mechanism]",
  journal =      j-DOKL-AKAD-NAUK,
  volume =       "177",
  number =       "6",
  pages =        "1465--1468",
  day =          "21",
  month =        dec,
  year =         "1967",
  CODEN =        "DANKAS",
  ISSN =         "0002-3264",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Doklady Akademii nauk SSSR",
  journal-URL =  "http://istina.msu.ru/journals/366838/",
  language =     "Russian",
}

@Article{Kutzelnigg:1967:BRBa,
  author =       "W. Kutzelnigg",
  title =        "Book Review: {{\booktitle{Advances in Quantum
                 Chemistry}}, Vol. 2. Herausgeg. von P. O. L{\"o}wdin,
                 Academic Press, Inc., New York-London 1965. 1. Aufl.,
                 XI, 372 S., 79 Abb., geb \$14.50}",
  journal =      j-ANGEW-CHEM,
  volume =       "79",
  number =       "6",
  pages =        "282--282",
  day =          "21",
  month =        mar,
  year =         "1967",
  CODEN =        "ANCEAD",
  DOI =          "https://doi.org/10.1002/ange.19670790624",
  ISSN =         "0044-8249 (print), 1521-3757 (electronic)",
  ISSN-L =       "0044-8249",
  bibdate =      "Mon Oct 10 16:22:25 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://onlinelibrary.wiley.com/doi/10.1002/ange.19670790624/abstract",
  acknowledgement = ack-nhfb,
  fjournal =     "Angewandte Chemie",
  journal-URL =  "http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-3757",
}

@Article{Kutzelnigg:1967:BRBb,
  author =       "W. Kutzelnigg",
  title =        "Book Review: {{\booktitle{Advances in Quantum
                 Chemistry}}, Vol. 2. Edited by P. O. L{\"o}wdin}",
  journal =      j-ANGEW-CHEM-INT-ED-ENGL,
  volume =       "6",
  number =       "3",
  pages =        "278--278",
  month =        mar,
  year =         "1967",
  CODEN =        "ACIEAY",
  DOI =          "https://doi.org/10.1002/anie.196702781",
  ISSN =         "0570-0833",
  bibdate =      "Mon Oct 10 16:32:20 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://onlinelibrary.wiley.com/doi/10.1002/anie.196702781/abstract",
  acknowledgement = ack-nhfb,
  fjournal =     "Angewandte Chemie, International Edition in English",
  journal-URL =  "http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-3773a",
}

@Article{Konig:1968:BRB,
  author =       "Edgar K{\"o}nig",
  title =        "Book Review: {{\booktitle{Advances in Quantum
                 Chemistry}}, by P. O. L{\"o}wdin. Band 4. Academic
                 Press, New York und London 1968. 334 Sciten. Preis:
                 \$17.00}",
  journal =      j-BER-BUNSENGES-PHYS-CHEM,
  volume =       "72",
  number =       "7",
  pages =        "888--888",
  month =        sep,
  year =         "1968",
  CODEN =        "BBPCAX",
  DOI =          "https://doi.org/10.1002/bbpc.19680720733",
  ISSN =         "0005-9021",
  bibdate =      "Mon Oct 10 16:26:52 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://onlinelibrary.wiley.com/doi/10.1002/bbpc.19680720733/abstract",
  acknowledgement = ack-nhfb,
  fjournal =     "Berichte der Bunsen-Gesellschaft fuer Physikalische
                 Chemie, 1963--1990",
  journal-URL =  "http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)0005-9021e",
}

@Article{Killingbeck:1969:ALP,
  author =       "J. Killingbeck",
  title =        "An Application of {L{\"o}wdin} Projection Operators to
                 Spin-Orbit Coupling Theory",
  journal =      j-PHYS-STATUS-SOLIDI-B-BASIC-RES,
  volume =       "36",
  number =       "1",
  pages =        "K67--K69",
  month =        "????",
  year =         "1969",
  CODEN =        "PSSBBD",
  DOI =          "https://doi.org/10.1002/pssb.19690360159/abstract",
  ISSN =         "0370-1972 (print), 1521-3951 (electronic)",
  ISSN-L =       "0370-1972",
  bibdate =      "Mon Oct 10 16:29:33 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://onlinelibrary.wiley.com/doi/10.1002/pssb.19690360159/abstract",
  acknowledgement = ack-nhfb,
  fjournal =     "Physica Status Solidi. B, Basic Research",
  journal-URL =  "http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-3951/",
}

@Article{Bass:1971:DAR,
  author =       "G. E. Bass and L. J. Schaad",
  title =        "Deoxyribonucleic acid replication. {A} theoretical
                 study of {L{\"o}wdin}'s mechanism",
  journal =      j-JACS,
  volume =       "93",
  number =       "18",
  pages =        "4585--4591",
  day =          "8",
  month =        sep,
  year =         "1971",
  CODEN =        "JACSAT",
  ISSN =         "0002-7863 (print), 1520-5126 (electronic), 1943-2984",
  ISSN-L =       "0002-7863",
  bibdate =      "Thu Dec 28 16:12:17 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 PubMed database",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of the American Chemical Society",
  journal-URL =  "http://pubs.acs.org/journal/jacsat",
}

@Article{Bass:1971:DRT,
  author =       "G. E. Bass and L. J. Schaad",
  title =        "{DNA} Replication: a Theoretical Study of
                 {L{\"o}wdin}'s Mechanism",
  journal =      j-JACS,
  volume =       "93",
  number =       "18",
  pages =        "4585--4591",
  month =        "????",
  year =         "1971",
  CODEN =        "JACSAT",
  ISSN =         "0002-7863 (print), 1520-5126 (electronic), 1943-2984",
  ISSN-L =       "0002-7863",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of the American Chemical Society",
  journal-URL =  "http://pubs.acs.org/journal/jacsat",
}

@Article{Duff:1971:CFL,
  author =       "K. J. Duff",
  title =        "A computational form for {L{\"o}wdin}'s alpha
                 function",
  journal =      j-IJQC,
  volume =       "5",
  number =       "1",
  pages =        "111--113",
  month =        jan,
  year =         "1971",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560050108",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 10 17:16:55 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1970.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "12 Oct 2004",
}

@Article{Kashiwagi:1973:GLO,
  author =       "H. Kashiwagi and F. Sasaki",
  title =        "A Generalization of the {L{\"o}wdin}
                 Orthogonalization",
  journal =      j-IJQC,
  volume =       "7",
  number =       "S7",
  pages =        "515--520",
  day =          "21--27",
  month =        jan,
  year =         "1973",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560070758",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Jan 3 19:30:27 1996",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1970.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Scofield:1973:NLO,
  author =       "D. F. Scofield",
  title =        "A note on {L{\"o}wdin} orthogonalization and the
                 square root of a positive self-adjoint matrix",
  journal =      j-IJQC,
  volume =       "7",
  number =       "3",
  pages =        "561--568",
  month =        may,
  year =         "1973",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560070311",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 08:57:39 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1970.bib",
  abstract =     "A quadratically convergent process using a continued
                 fraction method for finding the square root of the
                 overlap matrix used in L{\"o}wdin orthogonalization is
                 presented. The continued fraction method is compared to
                 several other methods for finding the square root of a
                 matrix. The method is found to be more efficient than
                 the other methods when high accuracy is desired.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Aiken:1975:LOM,
  author =       "J. G. Aiken and H. B. Jonassen and H. S. Aldrich",
  title =        "{L{\"o}wdin} Orthogonalization as a Minimum Energy
                 Perturbation",
  journal =      j-J-CHEM-PHYS,
  volume =       "62",
  number =       "7",
  pages =        "2745--2746",
  month =        "????",
  year =         "1975",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.430808",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Bajaj:1975:SBK,
  author =       "M. M. Bajaj",
  title =        "Study of {Blumenfeld-Kalmanson-L{\"o}wdin} Effect in
                 {Watson--Crick} Type of Double Helical {DNA} Structures
                 Using Biomagnetic Technique",
  journal =      j-BULL-AMER-PHYS-SOC,
  volume =       "20",
  number =       "12",
  pages =        "1501--1501",
  month =        "????",
  year =         "1975",
  CODEN =        "BAPSA6",
  ISSN =         "0003-0503",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Bulletin of the American Physical Society",
}

@Article{Dixon:1975:UPF,
  author =       "M. Dixon and G. Doggett and G. Howat",
  title =        "Use of Partial (and Full) {L{\"o}wdin} Integral
                 Approximations in Molecular-Orbital Calculations on
                 {HCN} and {FCN}",
  journal =      j-J-CHEM-SOC-FARADAY-TRANS-2,
  volume =       "71",
  number =       "??",
  pages =        "452--462",
  month =        "????",
  year =         "1975",
  CODEN =        "JCFTBS",
  DOI =          "https://doi.org/10.1039/f29757100452",
  ISSN =         "0300-9238 (print), 2050-5663 (electronic)",
  ISSN-L =       "0300-9238",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of the Chemical Society --- Faraday
                 Transactions II",
  journal-URL =  "http://pubs.rsc.org/en/journals/journalissues/f2",
}

@Article{Varga:1975:LPO,
  author =       "J. A. Varga and C. A. L. Becker",
  title =        "{L{\"o}wdin} Projection Operator and Construction of
                 Strong Crystalline Field {D$_3$} Eigenfunctions",
  journal =      j-TEX-J-SCI,
  volume =       "26",
  number =       "3--4",
  pages =        "577--584",
  month =        "????",
  year =         "1975",
  CODEN =        "TJSCAU",
  ISSN =         "0040-4403",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Texas Journal of Science",
}

@InCollection{Abdulnur:1976:PTD,
  author =       "Suheil F. Abdulnur",
  title =        "Proton Tunnelling in {DNA} Base Pairs and
                 Mutagenesis",
  crossref =     "Calais:1976:QSM",
  pages =        "567--575",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_42",
  bibdate =      "Mon Mar 24 11:00:57 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/content/pdf/10.1007/978-1-4757-1659-7_42.pdf",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Ahlberg:1976:BSR,
  author =       "Ragnar Ahlberg",
  title =        "Bounds to the Sum-Rule Function from
                 Inner-Projections",
  crossref =     "Calais:1976:QSM",
  pages =        "349--355",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_22",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_22/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Anonymous:1976:BM,
  author =       "Anonymous",
  title =        "Back Matter",
  crossref =     "Calais:1976:QSM",
  pages =        "589--595",
  year =         "1976",
  bibdate =      "Mon Mar 24 11:00:57 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/content/pdf/bbm:978-1-4757-1659-7/1.pdf",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Anonymous:1976:FM,
  author =       "Anonymous",
  title =        "Front Matter",
  crossref =     "Calais:1976:QSM",
  pages =        "i--ix",
  year =         "1976",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/content/pdf/bfm:978-1-4757-1659-7/1.pdf",
  acknowledgement = ack-nhfb,
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Bailey:1976:TCQ,
  author =       "T. L. Bailey and J. L. Kinsey",
  title =        "Test of the Conventional Quantum Chemistry Methods on
                 the Hydrogen Atom",
  crossref =     "Calais:1976:QSM",
  pages =        "249--263",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_15",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_15/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Bartlett:1976:NIO,
  author =       "Rodney J. Bartlett and David M. Silver",
  title =        "Numerical Infinite-Order Perturbation Theory",
  crossref =     "Calais:1976:QSM",
  pages =        "393--408",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_26",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_26/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Berggren:1976:ISP,
  author =       "K.-F. Berggren",
  title =        "Inelastic Scattering of Photons from Ionic Crystals
                 and Effects of Overlap",
  crossref =     "Calais:1976:QSM",
  pages =        "141--169",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_10",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_10/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Berrondo:1976:RPS,
  author =       "M. Berrondo and G. Garc{\'\i}a-Calder{\'o}n",
  title =        "On Resonant Potential Scattering",
  crossref =     "Calais:1976:QSM",
  pages =        "295--304",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_18",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_18/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Block:1976:IOA,
  author =       "R. Block and L. Jansen",
  title =        "Importance of Overlap in the Analysis of Weak Exchange
                 Interactions by Perturbation Methods",
  crossref =     "Calais:1976:QSM",
  pages =        "123--140",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_9",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_9/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Brandas:1976:LBF,
  author =       "Erkki Br{\"a}ndas",
  title =        "On the {L{\"o}wdin} Bracketing Function",
  crossref =     "Calais:1976:QSM",
  pages =        "381--392",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_25",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_25/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Calais:1976:PPO,
  author =       "Jean-Louis Calais and Osvaldo Goscinski and Jan
                 Linderberg and Yngve {\"O}hrn",
  title =        "Publications of {Per-Olov L{\"o}wdin} 1939--1976",
  crossref =     "Calais:1976:QSM",
  pages =        "13--23",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_2",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_2/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Calais:1976:SCQ,
  author =       "Jean-Louis Calais",
  title =        "Some Comments on the Quantum-Mechanical Treatment of
                 Defects in Ionic Crystals",
  crossref =     "Calais:1976:QSM",
  pages =        "171--178",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_11",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_11/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Chojnacki:1976:EEF,
  author =       "H. Chojnacki",
  title =        "External Electrical Field and Proton Transfer",
  crossref =     "Calais:1976:QSM",
  pages =        "561--565",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_41",
  bibdate =      "Mon Mar 24 11:00:57 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/content/pdf/10.1007/978-1-4757-1659-7_41.pdf",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Daudel:1976:CBM,
  author =       "R. Daudel",
  title =        "The Chemical Bond as a Many-Electron Problem",
  crossref =     "Calais:1976:QSM",
  pages =        "445--458",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_31",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_31/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@Book{Davidson:1976:RDM,
  author =       "Ernest R. Davidson",
  title =        "Reduced Density Matrices in Quantum Chemistry",
  volume =       "6",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  pages =        "viii + 135",
  year =         "1976",
  ISBN =         "0-12-205850-X",
  ISBN-13 =      "978-0-12-205850-9",
  LCCN =         "QD462 .D4",
  bibdate =      "Fri Jun 16 12:14:57 MDT 2017",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 z3950.loc.gov:7090/Voyager",
  series =       "Theoretical chemistry: a series of monographs",
  URL =          "http://www.sciencedirect.com/science/book/9780122058509",
  acknowledgement = ack-nhfb,
  subject =      "Quantum chemistry; Density matrices",
  tableofcontents = "Theoretical Chemistry / ii \\
                 Front Matter / iii \\
                 Copyright page / iv \\
                 Preface / vii \\
                 Acknowledgments / viii \\
                 1: Ensemble Density Matrix / 1--7 \\
                 2: Reduced Density Matrices / 8--19 \\
                 3: Properties of Reduced Density Matrices / 20--30 \\
                 4: Analytic Properties of the First-Order Reduced
                 Density Matrix / 31--56 \\
                 5: Physical Properties of the First-Order Reduced
                 Density Matrix / 57--96 \\
                 6: Analytic Properties of the Second-Order Reduced
                 Density Matrix / 97--114 \\
                 7: Physical Interpretation of the Two-Body Density
                 Matrix / 115--122 \\
                 References / 123--131 \\
                 Index / 133--135",
}

@Article{DeAViccaro:1976:SPL,
  author =       "M. H. {De A. Viccaro}",
  title =        "Symmetry property of {L{\"o}wdin}'s ``alpha''
                 function",
  journal =      j-IJQC,
  volume =       "10",
  number =       "6",
  pages =        "1081--1082",
  month =        nov,
  year =         "1976",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560100621",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 08:58:19 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1970.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@InCollection{DelRe:1976:NOP,
  author =       "Giuseppe {Del Re}",
  title =        "The Non-Orthogonality Problem and Orthogonalization
                 Procedures",
  crossref =     "Calais:1976:QSM",
  pages =        "53--75",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_5",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_5/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Froman:1976:AVR,
  author =       "Anders Fr{\"o}man and Osvaldo Goscinski",
  title =        "{{\booktitle{Acta V{\aa}l{\aa}dalensia}}} Revisited:
                 {Per-Olov L{\"o}wdin} in Scientific Discussion",
  crossref =     "Calais:1976:QSM",
  pages =        "33--51",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_4",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_4/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Froman:1976:PCA,
  author =       "Anders Fr{\"o}man",
  title =        "Properties of Compressed Atoms from a Spherical
                 Cellular Model",
  crossref =     "Calais:1976:QSM",
  pages =        "179--199",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_12",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_12/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Goscinski:1976:BCI,
  author =       "Osvaldo Goscinski",
  title =        "Bonding Character of Inner-Shell Orbitals in Diatomic
                 Molecules",
  crossref =     "Calais:1976:QSM",
  pages =        "427--432",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_29",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_29/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Hall:1976:NFC,
  author =       "G. G. Hall",
  title =        "A New Formulation of the Correlation Problem",
  crossref =     "Calais:1976:QSM",
  pages =        "433--444",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_30",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_30/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Harcourt:1976:CEP,
  author =       "R. D. Harcourt",
  title =        "The Calculation of the Exchange Parameter {$ J = (1 /
                 2)(E_{\rm singlet} - E_{\rm triplet}) $} for Two
                 Equivalent Electrons Using Canonical Molecular
                 Orbitals",
  crossref =     "Calais:1976:QSM",
  pages =        "105--122",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_8",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_8/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Hehenberger:1976:NAW,
  author =       "Michael Hehenberger",
  title =        "Numerical Aspects of {Weyl}'s Theory",
  crossref =     "Calais:1976:QSM",
  pages =        "265--275",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_16",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_16/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Howat:1976:PHF,
  author =       "G. Howat and S. Lunell",
  title =        "{Projected Hartree--Fock} Calculations on the Ground
                 and First Excited {$^1 \Sigma_g^+$} States of the
                 Hydrogen Molecule",
  crossref =     "Calais:1976:QSM",
  pages =        "491--498",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_35",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_35/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Jansen:1976:CBN,
  author =       "H. B. Jansen and P. Pyykk{\"o}",
  title =        "Calculation of the Bromine Nuclear Pseudoquadrupole
                 Coupling Constant in the {LiBr} Molecule Using a
                 Density-of-States Function Deduced from Overlap
                 Integrals",
  crossref =     "Calais:1976:QSM",
  pages =        "409--416",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_27",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_27/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Kaijser:1976:ISM,
  author =       "Per Kaijser and Vedene H. {Smith, Jr.}",
  title =        "On Inversion Symmetry in Momentum Space",
  crossref =     "Calais:1976:QSM",
  pages =        "417--425",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_28",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_28/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Kolos:1976:LRI,
  author =       "W. Ko{\l}os",
  title =        "Long-Range Interaction in Some Two-Electron Systems",
  crossref =     "Calais:1976:QSM",
  pages =        "465--477",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_33",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_33/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Ladik:1976:TTD,
  author =       "J{\'a}nos J. Ladik",
  title =        "Towards the Theoretical Determination of the
                 Conformation of Biological Macromolecules",
  crossref =     "Calais:1976:QSM",
  pages =        "539--548",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_39",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_39/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Larsson:1976:OMC,
  author =       "S. Larsson and R. E. Brown",
  title =        "Orbital Methods and Correlation Errors in Expectation
                 Values",
  crossref =     "Calais:1976:QSM",
  pages =        "459--463",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_32",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_32/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Laskowski:1976:GCM,
  author =       "Bernard Laskowski",
  title =        "The Generator Coordinate Method Illustrated on the
                 Hydrogen Molecule",
  crossref =     "Calais:1976:QSM",
  pages =        "479--489",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_34",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_34/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Lathouwers:1976:BBH,
  author =       "Luc Lathouwers",
  title =        "Biorthonormal Bases in {Hilbert} Space",
  crossref =     "Calais:1976:QSM",
  pages =        "77--91",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_6",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_6/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@Article{Leopold:1976:SLC,
  author =       "J. G. Leopold and M. Cohen and J. Katriel",
  title =        "A study of {L{\"o}wdin}'s criterion for completeness
                 of basis sets",
  journal =      j-IJQC,
  volume =       "10",
  number =       "6",
  pages =        "1049--1056",
  month =        nov,
  year =         "1976",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560100615",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 08:58:19 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1970.bib",
  abstract =     "L{\"o}wdin has formulated a useful criterion for
                 testing the completeness of an expansion basis set.
                 From this criterion one may obtain an incompleteness
                 coefficient for a truncated (finite) basis set. We have
                 investigated the significance of this incompleteness
                 coefficient for some of the basis sets we have used in
                 our recent calculations of bounds to quantum mechanical
                 properties. The similarity of the convergence
                 properties between our bounds and the incompleteness
                 coefficient suggests that L{\"o}wdin's criterion is
                 likely to be useful in practice.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Levy:1976:UVF,
  author =       "Mel Levy",
  title =        "Universal variational functionals of electron
                 densities, first-order density matrices, and natural
                 spin-orbitals and solution of the $v$-representability
                 problem",
  journal =      j-PROC-NATL-ACAD-SCI-USA,
  volume =       "76",
  number =       "12",
  pages =        "6062--6065",
  month =        "????",
  year =         "1976",
  CODEN =        "PNASA6",
  ISSN =         "0027-8424 (print), 1091-6490 (electronic)",
  ISSN-L =       "0027-8424",
  bibdate =      "Mon Oct 10 15:57:51 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://www.pnas.org/content/76/12/6062.full.pdf+html",
  abstract =     "Universal variational functionals of densities,
                 first-order density matrices, and natural spin-orbitals
                 are explicitly displayed for variational calculations
                 of ground states of interacting electrons in atoms,
                 molecules, and solids. In all cases, the functionals
                 search for constrained minima. In particular, following
                 Percus [Formula: see text] is identified as the
                 universal functional of Hohenberg and Kohn for the sum
                 of the kinetic and electron--electron repulsion
                 energies of an N-representable trial electron density $
                 \rho $. {$ Q[\rho] $} searches all antisymmetric
                 wavefunctions {$ \Psi (\rho) $} which yield the fixed $
                 \rho $. {$ Q[\rho] $} then delivers that expectation
                 value which is a minimum. Similarly, [Formula: see
                 text] is shown to be the universal functional for the
                 electron--electron repulsion energy of an
                 N-representable trial first-order density matrix $
                 \gamma $, where the actual external potential may be
                 nonlocal as well as local. These universal functions do
                 not require that a trial function for a variational
                 calculation be associated with a ground state of some
                 external potential. Thus, the v-representability
                 problem, which is especially severe for trial
                 first-order density matrices, has been solved.
                 Universal variational functionals in Hartree--Fock and
                 other restricted wavefunction theories are also
                 presented. Finally, natural spin-orbital functional
                 theory is compared with traditional orbital
                 formulations in density functional theory.",
  acknowledgement = ack-nhfb,
  fjournal =     "Proceedings of the National Academy of Sciences of the
                 United States of America",
  journal-URL =  "http://www.pnas.org/search",
}

@InCollection{Linderberg:1976:EWM,
  author =       "Jan Linderberg and Yngve {\"O}hrn and Poul W.
                 Thulstrup",
  title =        "{Energy Weighted Maximum Overlap (EWMO)}",
  crossref =     "Calais:1976:QSM",
  pages =        "93--103",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_7",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_7/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Lundqvist:1976:SDC,
  author =       "Stig Lundqvist",
  title =        "Static and Dynamic Correlations in Many-Electron
                 Systems",
  crossref =     "Calais:1976:QSM",
  pages =        "201--214",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_13",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_13/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Manne:1976:POL,
  author =       "Rolf Manne",
  title =        "{Per-Olov L{\"o}wdin} in the Scientific Literature
                 1965--1974",
  crossref =     "Calais:1976:QSM",
  pages =        "25--31",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_3",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_3/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{McIntosh:1976:QGF,
  author =       "Harold V. McIntosh",
  title =        "Quantization and a {Green}'s Function for Systems of
                 Linear Ordinary Differential Equations",
  crossref =     "Calais:1976:QSM",
  pages =        "277--294",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_17",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_17/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Micha:1976:MBT,
  author =       "David A. Micha",
  title =        "Many-Body Theory of Molecular Collisions",
  crossref =     "Calais:1976:QSM",
  pages =        "367--380",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_24",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_24/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Ohno:1976:POL,
  author =       "Kimio Ohno",
  title =        "{Per-Olov L{\"o}wdin} --- Conqueror of Scientific,
                 Educational and Rocky Mountains",
  crossref =     "Calais:1976:QSM",
  pages =        "1--12",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_1",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_1/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Pauncz:1976:IPP,
  author =       "Ruben Pauncz",
  title =        "Investigations into the Properties of Projected Spin
                 Functions",
  crossref =     "Calais:1976:QSM",
  pages =        "357--365",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_23",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_23/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Pullman:1976:PGQ,
  author =       "Alberte Pullman and Bernard Pullman",
  title =        "The Phosphate Group in Quantum Biochemistry",
  crossref =     "Calais:1976:QSM",
  pages =        "517--537",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_38",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_38/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Ratner:1976:PMI,
  author =       "Mark A. Ratner and J. R. Sabin",
  title =        "On Proton Mobilities in Individual Hydrogen Bonds",
  crossref =     "Calais:1976:QSM",
  pages =        "577--588",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_43",
  bibdate =      "Mon Mar 24 11:00:57 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/content/pdf/10.1007/978-1-4757-1659-7_43.pdf",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Redei:1976:LPR,
  author =       "L. B. R{\'e}dei",
  title =        "{Laguerre} Polynomials, Reminiscences from {Uppsala}",
  crossref =     "Calais:1976:QSM",
  pages =        "305--306",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_19",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/accesspage/chapter/10.1007/978-1-4757-1659-7_19?coverImageUrl=/static/0.7725/sites/link/images/abstract_cover_placeholder.png",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Reid:1976:LBE,
  author =       "Charles E. Reid",
  title =        "Lower Bounds to Energy Eigenvalues",
  crossref =     "Calais:1976:QSM",
  pages =        "315--347",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_21",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_21/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Rein:1976:EMA,
  author =       "Robert Rein and Ramon Garduno",
  title =        "Energetics and Mechanism of $2$-Aminopurine Induced
                 Mutations",
  crossref =     "Calais:1976:QSM",
  pages =        "549--560",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_40",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_40/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Ruedenberg:1976:MSC,
  author =       "Klaus Ruedenberg and Kenneth R. Sundberg",
  title =        "{MCSCF} Studies of Chemical Reactions: Natural
                 Reaction Orbitals and Localized Reaction Orbitals",
  crossref =     "Calais:1976:QSM",
  pages =        "505--515",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_37",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_37/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Slater:1976:PSM,
  author =       "J. C. Slater",
  title =        "Power Series Methods for Cellular Calculations on
                 Atoms, Molecules and Solids",
  crossref =     "Calais:1976:QSM",
  pages =        "215--247",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_14",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_14/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{VanLeuven:1976:DAP,
  author =       "P. {Van Leuven}",
  title =        "Deformed Atoms and the {Projected Hartree--Fock}
                 Method",
  crossref =     "Calais:1976:QSM",
  pages =        "499--504",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_36",
  bibdate =      "Mon Mar 24 11:00:46 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_36/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@InCollection{Weinhold:1976:PTD,
  author =       "Frank Weinhold",
  title =        "Partitioning Technique for Determinantal Equations",
  crossref =     "Calais:1976:QSM",
  pages =        "307--314",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7_20",
  bibdate =      "Mon Mar 24 11:00:35 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/chapter/10.1007/978-1-4757-1659-7_20/",
  acknowledgement = ack-nhfb,
  book-DOI =     "https://doi.org/10.1007/978-1-4757-1659-7",
  book-URL =     "http://www.springerlink.com/content/978-1-4757-1659-7",
}

@Article{Williams:1976:LEL,
  author =       "A. R. Williams and D. Weaire",
  title =        "Letter to the {Editor}: The {L{\"o}wdin} technique as
                 an exact folding procedure in band-structure
                 calculations",
  journal =      j-J-PHYS-C,
  volume =       "9",
  number =       "2",
  pages =        "L47--L50",
  year =         "1976",
  CODEN =        "JPSOAW",
  DOI =          "https://doi.org/10.1088/0022-3719/9/2/005",
  ISSN =         "0022-3719",
  bibdate =      "Fri Sep 7 11:01:22 2012",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://stacks.iop.org/0022-3719/9/i=2/a=005",
  abstract =     "A method of computation of pseudopotential band
                 structure in a limited range of energy is suggested. It
                 is based on L{\"o}wdin's technique (1951), used as an
                 exact (self-consistent) folding procedure. Some
                 examples are given of the application of the method.",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Physics C: Solid state physics",
  journal-URL =  "http://iopscience.iop.org/0022-3719",
}

@Article{Calais:1977:FHP,
  author =       "J. L. Calais and O. Goscinski",
  title =        "{Festschrift} Honoring {P.-O. L{\"o}wdin} ---
                 Preface",
  journal =      j-IJQC,
  volume =       "11",
  number =       "6",
  pages =        "895--895",
  month =        "????",
  year =         "1977",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560110602",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Crossley:1977:LPO,
  author =       "Richard J. S. Crossley",
  title =        "On {L{\"o}wdin}'s projection operators for angular
                 momentum. {I}",
  journal =      j-IJQC,
  volume =       "11",
  number =       "6",
  pages =        "917--929",
  month =        jun,
  year =         "1977",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560110605",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 08:58:21 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1970.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Doggett:1977:UPL,
  author =       "G. Doggett",
  title =        "Use of Partial {L{\"o}wdin} ({PLA}) and Limited
                 Expansion of Diatomic Overlap ({LEDO}) Integral
                 Approximation Methods in Molecular-Orbital Calculations
                 of Isomer Pairs {HCN}, {CNH} and {FCN}, {CNF}",
  journal =      j-J-CHEM-SOC-FARADAY-TRANS-2,
  volume =       "73",
  number =       "??",
  pages =        "1153--1168",
  month =        "????",
  year =         "1977",
  CODEN =        "JCFTBS",
  DOI =          "https://doi.org/10.1039/f29777301153",
  ISSN =         "0300-9238 (print), 2050-5663 (electronic)",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of the Chemical Society --- Faraday
                 Transactions II",
  journal-URL =  "http://pubs.rsc.org/en/journals/journalissues/f2",
}

@Article{Grau:1977:ABL,
  author =       "D. Grau",
  title =        "An application of the {Brillouin--L{\"o}wdin}
                 perturbation expansion: {Lower} bounds to the energy
                 eigenvalues of the rigid rotator in an electric field",
  journal =      j-IJQC,
  volume =       "11",
  number =       "6",
  pages =        "931--941",
  month =        jun,
  year =         "1977",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560110606",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 08:58:21 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1970.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Jansen:1977:PLS,
  author =       "L. Jansen",
  title =        "{P.-O. L{\"o}wdin}'s scientific and other activities",
  journal =      j-IJQC,
  volume =       "11",
  number =       "6",
  pages =        "897--905",
  month =        jun,
  year =         "1977",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560110603",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 08:58:21 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1970.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Scharfenberg:1977:NAS,
  author =       "Peter Scharfenberg",
  title =        "A new algorithm for the symmetric {(L{\"o}wdin)}
                 orthonormalization",
  journal =      j-IJQC,
  volume =       "12",
  number =       "5",
  pages =        "827--839",
  month =        nov,
  year =         "1977",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560120506",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 08:58:22 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1970.bib",
  abstract =     "A new method for the numerical calculation of
                 (inverse) square roots of real symmetric matrices is
                 proposed. Simplicity of the algorithm, good numerical
                 accuracy, short computational time and the possibility
                 to solve the problem in an $ (n, n) $ array are some of
                 its features; in addition a new theoretical view on
                 this problem is presented.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Stepanov:1977:KSG,
  author =       "N. F. Stepanov",
  title =        "On the {Kashiwagi--Sasaki} generalization of the
                 {L{\"o}wdin} orthogonalization and the inverse
                 vibrational problem",
  journal =      j-IJQC,
  volume =       "12",
  number =       "2",
  pages =        "317--326",
  month =        aug,
  year =         "1977",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560120208",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 08:58:21 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1970.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Jones:1978:MFS,
  author =       "Herbert W. Jones and C. A. Weatherford",
  title =        "A modified form of {Sharma}'s formula for {STO}
                 {L{\"o}wdin} alpha functions with recurrence relations
                 for the coefficient matrix",
  journal =      j-IJQC,
  volume =       "14",
  number =       "S12",
  pages =        "483--488",
  month =        "????",
  year =         "1978",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560140842",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 10 17:41:42 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1970.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "18 Jun 2009",
}

@Article{Morikawa:1978:VAL,
  author =       "T. Morikawa",
  title =        "Variation Approach to {L{\"o}wdin} Canonical
                 Orthonormalization",
  journal =      j-PHYS-LET-A,
  volume =       "68",
  number =       "3--4",
  pages =        "323--325",
  month =        "????",
  year =         "1978",
  CODEN =        "PYLAAG",
  DOI =          "https://doi.org/10.1016/0375-9601(78)90520-0",
  ISSN =         "0375-9601 (print), 1873-2429 (electronic)",
  ISSN-L =       "0375-9601",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Physics Letters A",
  journal-URL =  "http://www.sciencedirect.com/science/journal/03759601",
}

@Article{Caldwell:1979:DMM,
  author =       "Dennis Caldwell and Patrick Redington and Henry
                 Eyring",
  title =        "Density matrix method for orbital localization",
  journal =      j-PROC-NATL-ACAD-SCI-USA,
  volume =       "76",
  number =       "7",
  pages =        "3042--3045",
  month =        "????",
  year =         "1979",
  CODEN =        "PNASA6",
  ISSN =         "0027-8424 (print), 1091-6490 (electronic)",
  ISSN-L =       "0027-8424",
  bibdate =      "Mon Oct 10 15:55:09 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://www.pnas.org/content/76/7/3042.full.pdf+html",
  abstract =     "A method is presented for localizing molecular
                 orbitals, based on diagonalizing subunits of the
                 density matrix. First, nonbonding orbitals are found by
                 diagonalizing the monatomic subunits; then, diatomic $
                 \sigma $ or $ \pi $ bonding and antibonding orbitals
                 are obtained from the diatomic subunits for all bonded
                 pairs of atoms; finally, the delocalized $ \pi
                 $-orbitals for particular chromophores are found by
                 projecting the first set out of the self-consistent
                 field (SCF) Hamiltonian. The results show good general
                 agreement with other localization methods, with
                 advantages in the ability to display group orbitals in
                 complex molecules which most closely resemble the SCF
                 orbitals for simple prototypes.",
  acknowledgement = ack-nhfb,
  fjournal =     "Proceedings of the National Academy of Sciences of the
                 United States of America",
  journal-URL =  "http://www.pnas.org/search",
}

@Article{Kornblum:1979:BRB,
  author =       "Zvi C. Kornblum",
  title =        "Book Review: {{\booktitle{Proceedings of the
                 International Symposium on Atomic, Molecular, and
                 Solid-State Theory, Collision Phenomena, and
                 Computational Methods}}, by Per-Olov L{\"o}wdin}",
  journal =      j-J-ELECTROCHEM-SOC,
  volume =       "126",
  number =       "??",
  pages =        "490C--??",
  month =        "????",
  year =         "1979",
  CODEN =        "JESOAN",
  DOI =          "https://doi.org/10.1149/1.2128957",
  ISSN =         "0013-4651 (print), 1945-7111 (electronic)",
  ISSN-L =       "0013-4651",
  bibdate =      "Mon Oct 10 13:16:14 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of the Electrochemical Society",
  journal-URL =  "http://jes.ecsdl.org/content/by/year",
}

@Article{Aiken:1980:LO,
  author =       "John G. Aiken and John A. Erdos and Jerome A.
                 Goldstein",
  title =        "On {L{\"o}wdin} orthogonalization",
  journal =      j-IJQC,
  volume =       "18",
  number =       "4",
  pages =        "1101--1108",
  month =        oct,
  year =         "1980",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560180416",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 12:45:35 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Maksic:1981:COB,
  author =       "Z. B. Maksic",
  title =        "Construction of Optimal Basis-Sets in Approximate
                 Theories of the Electronic-Structure of Molecules ---
                 Weighted {L{\"o}wdin} Orthogonalization",
  journal =      "{Zeitschrift f{\"u}r Naturforschung Section A --- a
                 Journal of Physical Sciences}",
  volume =       "36",
  number =       "4",
  pages =        "373--377",
  month =        "????",
  year =         "1981",
  ISSN =         "0932-0784 (print), 1865-7109 (electronic)",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Masovic:1981:BSC,
  author =       "D. R. Masovic and F. Vukajlovic",
  title =        "Band-Structure Calculations of Cubic Semiconductors on
                 the Basis of {L{\"o}wdin} Perturbation Technique",
  journal =      j-COMP-PHYS-COMM,
  volume =       "24",
  number =       "2",
  pages =        "181--184",
  month =        "????",
  year =         "1981",
  CODEN =        "CPHCBZ",
  DOI =          "https://doi.org/10.1016/0010-4655(81)90091-6",
  ISSN =         "0010-4655 (print), 1879-2944 (electronic)",
  ISSN-L =       "0010-4655",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/compphyscomm1980.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Computer Physics Communications",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00104655/",
}

@Article{McLaughlin:1981:BRB,
  author =       "Don R. McLaughlin",
  title =        "Book Review: {{\booktitle{Quantum Chemistry --- A
                 scientific melting pot}}, edited by Per-Olov
                 L{\"o}wdin, Jean-Louis Calais and Osvaldo Goscinski}",
  journal =      j-J-CHEM-EDUC,
  volume =       "58",
  number =       "4",
  pages =        "A153--??",
  month =        apr,
  year =         "1981",
  CODEN =        "JCEDA8",
  ISSN =         "0021-9584 (print), 1938-1328 (electronic)",
  ISSN-L =       "0021-9584",
  bibdate =      "Mon Oct 10 14:44:54 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Education",
  journal-URL =  "http://pubs.acs.org/journal/jceda8",
}

@Article{Wilson:1981:SLP,
  author =       "R. G. Wilson and C. S. Sharma",
  title =        "Studies in {L{\"o}wdin}'s partitioning technique in
                 quantum theory. {I}. {Invertibility} of the operator
                 {K}",
  journal =      j-IJQC,
  volume =       "20",
  number =       "4",
  pages =        "927--932",
  month =        oct,
  year =         "1981",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560200416",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 12:45:38 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Yim:1981:DFR,
  author =       "Yung-Chang Yim and Henry Eyring",
  title =        "Derivation of a formula for the resonance integral for
                 a nonorthogonal basis set",
  journal =      j-PROC-NATL-ACAD-SCI-USA,
  volume =       "78",
  number =       "5",
  pages =        "2649--2641",
  month =        "????",
  year =         "1981",
  CODEN =        "PNASA6",
  ISSN =         "0027-8424 (print), 1091-6490 (electronic)",
  ISSN-L =       "0027-8424",
  bibdate =      "Mon Oct 10 16:00:53 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://www.pnas.org/content/78/5/2649.full.pdf+html",
  abstract =     "In a self-consistent field calculation, a formula for
                 the off-diagonal matrix elements of the core
                 Hamiltonian is derived for a nonorthogonal basis set by
                 a polyatomic approach. A set of parameters is then
                 introduced for the repulsion integral formula of
                 Mataga--Nishimoto to fit the experimental data. The
                 matrix elements computed for the nonorthogonal basis
                 set in the $ \pi $-electron approximation are
                 transformed to those for an orthogonal basis set by the
                 L{\"o}wdin symmetrical orthogonalization.",
  acknowledgement = ack-nhfb,
  fjournal =     "Proceedings of the National Academy of Sciences of the
                 United States of America",
  journal-URL =  "http://www.pnas.org/search",
}

@Article{Panin:1982:MRCa,
  author =       "A. I. Panin",
  title =        "Method of recurrent construction of {L{\"o}wdin}
                 spin-adapted wave functions. {I}. {Addition} and
                 subtraction operators",
  journal =      j-IJQC,
  volume =       "22",
  number =       "3",
  pages =        "557--573",
  month =        sep,
  year =         "1982",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560220308",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 12:45:40 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Panin:1982:MRCb,
  author =       "A. I. Panin",
  title =        "Method of recurrent construction of {L{\"o}wdin}
                 spin-adapted wave functions. {II}. {Local}
                 representation of creation--annihilation operators",
  journal =      j-IJQC,
  volume =       "22",
  number =       "6",
  pages =        "1177--1188",
  month =        dec,
  year =         "1982",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560220604",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 12:45:41 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Wilson:1982:SLP,
  author =       "R. G. Wilson and C. S. Sharma",
  title =        "Studies in {L{\"o}wdin}'s partitioning technique in
                 quantum theory. {II}. {Operators} {$T$} and {$ \Omega
                 $}",
  journal =      j-IJQC,
  volume =       "22",
  number =       "1",
  pages =        "183--190",
  month =        jul,
  year =         "1982",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560220116",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 12:45:40 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Ahlrichs:1983:BRB,
  author =       "R. Ahlrichs",
  title =        "Book Review: {{\booktitle{New Horizons of Quantum
                 Chemistry. Proceedings of the Fourth International
                 Congress of Quantum Chemistry}}, by P.-O. L{\"o}wdin,
                 B. Pullmann. D. Reidel Publishing Company, Dordrecht,
                 Boston, London 1983. 457 pages, Preis: \$67.50}",
  journal =      j-BER-BUNSENGES-PHYS-CHEM,
  volume =       "87",
  number =       "9",
  pages =        "836--837",
  month =        sep,
  year =         "1983",
  CODEN =        "BBPCAX",
  DOI =          "https://doi.org/10.1002/bbpc.19830870928",
  ISSN =         "0005-9021",
  bibdate =      "Mon Oct 10 16:18:08 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://onlinelibrary.wiley.com/doi/10.1002/bbpc.19830870928/abstract",
  acknowledgement = ack-nhfb,
  fjournal =     "Berichte der Bunsen-Gesellschaft fuer Physikalische
                 Chemie, 1963--1990",
  journal-URL =  "http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)0005-9021e",
}

@Article{Bosanac:1983:AQC,
  author =       "S. D. Bosanac",
  title =        "Advances in Quantum-Chemistry, Vol 14 --- {P.-O.
                 L{\"o}wdin}",
  journal =      j-J-CHEM-SOC-FARADAY-TRANS-2,
  volume =       "79",
  number =       "??",
  pages =        "761--761",
  month =        "????",
  year =         "1983",
  CODEN =        "JCFTBS",
  DOI =          "https://doi.org/10.1039/f29837900761",
  ISSN =         "0300-9238 (print), 2050-5663 (electronic)",
  ISSN-L =       "0300-9238",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of the Chemical Society --- Faraday
                 Transactions II",
  journal-URL =  "http://pubs.rsc.org/en/journals/journalissues/f2",
}

@Article{Hermann:1983:LPL,
  author =       "M. R. Hermann and P. W. Langhoff",
  title =        "{L{\"o}wdin} partitioning in a {Lanczos} basis:
                 {Applications} to scattering states",
  journal =      j-IJQC,
  volume =       "23",
  number =       "1",
  pages =        "135--146",
  month =        jan,
  year =         "1983",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560230115",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 12:45:41 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lanczos-cornelius.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Panin:1983:MRCc,
  author =       "A. I. Panin",
  title =        "Method of recurrent construction of {L{\"o}wdin}
                 spin-adapted wave functions. {III}. {L{\"o}wdin} basis
                 and its permutation symmetry: {Evaluation} of overlap
                 integrals",
  journal =      j-IJQC,
  volume =       "24",
  number =       "3",
  pages =        "279--306",
  month =        sep,
  year =         "1983",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560240303",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 12:45:43 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Gordon:1984:AQC,
  author =       "M. S. Gordon",
  title =        "Advances in Quantum-Chemistry, Vol 15 --- {P.-O.
                 L{\"o}wdin}",
  journal =      j-JACS,
  volume =       "106",
  number =       "10",
  pages =        "3067--3067",
  month =        "????",
  year =         "1984",
  CODEN =        "JACSAT",
  ISSN =         "0002-7863 (print), 1520-5126 (electronic), 1943-2984",
  ISSN-L =       "0002-7863",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of the American Chemical Society",
  journal-URL =  "http://pubs.acs.org/journal/jacsat",
}

@Article{Goscinski:1984:LL,
  author =       "Osvaldo Goscinski and Jean-Louis Calais",
  title =        "{L{\"o}wdin} lectures",
  journal =      j-IJQC,
  volume =       "26",
  number =       "2",
  pages =        "295--295",
  month =        aug,
  year =         "1984",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560260213",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 12:45:45 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Jones:1984:FTC,
  author =       "Herbert W. Jones",
  title =        "Formulas for three-center exchange integrals by
                 computer implementation of the {L{\"o}wdin} $ \alpha
                 $-function method",
  journal =      j-IJQC,
  volume =       "26",
  number =       "S18",
  pages =        "61--66",
  day =          "1--15",
  month =        mar,
  year =         "1984",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560260810",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 10 18:04:53 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  note =         "Supplement: Atomic, Molecular and Solid-State Theory,
                 and Computational Quantum Chemistry",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "16 Apr 2008",
}

@Article{Panin:1984:MRC,
  author =       "A. I. Panin",
  title =        "Method of recurrent construction of {L{\"o}wdin}
                 spin-adapted wave functions. {IV}. {Matrix} element
                 evaluation problem",
  journal =      j-IJQC,
  volume =       "25",
  number =       "5",
  pages =        "767--793",
  month =        may,
  year =         "1984",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560250503",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 12:45:45 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Suzuki:1984:ESC,
  author =       "Noboru Suzuki",
  title =        "Erratum: {``Simple calculation of L{\"o}wdin's
                 alpha-function'', [J. Math. Phys. {\bf 25}, 1133
                 (1984)]}",
  journal =      j-J-MATH-PHYS,
  volume =       "25",
  number =       "10",
  pages =        "3135--3135",
  month =        oct,
  year =         "1984",
  CODEN =        "JMAPAQ",
  DOI =          "https://doi.org/10.1063/1.526032",
  ISSN =         "0022-2488 (print), 1089-7658 (electronic), 1527-2427",
  ISSN-L =       "0022-2488",
  MRclass =      "81G55 (33A70)",
  MRnumber =     "86d:81096b",
  MRreviewer =   "B. D. Agrawal",
  bibdate =      "Mon Oct 31 06:19:30 MDT 2011",
  bibsource =    "http://jmp.aip.org/;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathphys1980.bib",
  note =         "See \cite{Suzuki:1984:SCL}.",
  URL =          "http://jmp.aip.org/resource/1/jmapaq/v25/i10/p3135_s2",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Physics",
  journal-URL =  "http://jmp.aip.org/",
}

@Article{Suzuki:1984:SCL,
  author =       "Noboru Suzuki",
  title =        "Simple calculation of {L{\"o}wdin}'s alpha-function",
  journal =      j-J-MATH-PHYS,
  volume =       "25",
  number =       "4",
  pages =        "1133--1138",
  month =        apr,
  year =         "1984",
  CODEN =        "JMAPAQ",
  DOI =          "https://doi.org/10.1063/1.526256",
  ISSN =         "0022-2488 (print), 1089-7658 (electronic), 1527-2427",
  ISSN-L =       "0022-2488",
  MRclass =      "81G55 (33A70)",
  MRnumber =     "86d:81096a",
  MRreviewer =   "B. D. Agrawal",
  bibdate =      "Sat Oct 29 18:19:43 MDT 2011",
  bibsource =    "http://jmp.aip.org/;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathphys1980.bib",
  note =         "See erratum \cite{Suzuki:1984:ESC}.",
  URL =          "http://jmp.aip.org/resource/1/jmapaq/v25/i4/p1133_s1",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Physics",
  journal-URL =  "http://jmp.aip.org/",
  pagecount =    "6",
}

@Article{Antone:1985:CEL,
  author =       "A. A. Antone",
  title =        "Compact expression for {L{\"o}wdin}'s alpha function",
  journal =      j-J-MATH-PHYS,
  volume =       "26",
  number =       "5",
  pages =        "940--942",
  month =        may,
  year =         "1985",
  CODEN =        "JMAPAQ",
  DOI =          "https://doi.org/10.1063/1.526550",
  ISSN =         "0022-2488 (print), 1089-7658 (electronic), 1527-2427",
  ISSN-L =       "0022-2488",
  MRclass =      "33A70",
  MRnumber =     "86j:33014",
  MRreviewer =   "B. D. Agrawal",
  bibdate =      "Fri Oct 20 17:31:04 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathphys1985.bib",
  note =         "See comment \cite{Suzuki:1987:CCE}.",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Physics",
  journal-URL =  "http://jmp.aip.org/",
}

@Article{Suzuki:1985:SCL,
  author =       "Noboru Suzuki",
  title =        "Simple calculation of {L{\"o}wdin}'s alpha function.
                 {II}. {Easier} procedure for evaluating {$ b_{Kk}(L M
                 \vert l) $}, and vanishing of {$ h_{n, 2 n - i}(L M
                 \vert l) $} for special values of $i$ and $n$",
  journal =      j-J-MATH-PHYS,
  volume =       "26",
  number =       "12",
  pages =        "3193--3199",
  month =        dec,
  year =         "1985",
  CODEN =        "JMAPAQ",
  DOI =          "https://doi.org/10.1063/1.526648",
  ISSN =         "0022-2488 (print), 1089-7658 (electronic), 1527-2427",
  ISSN-L =       "0022-2488",
  MRclass =      "81G55 (33A70)",
  MRnumber =     "87i:81316",
  MRreviewer =   "B. D. Agrawal",
  bibdate =      "Fri Jan 2 07:23:17 MST 1998",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathphys1985.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Physics",
  journal-URL =  "http://jmp.aip.org/",
}

@Article{Bhatia:1986:WLO,
  author =       "Rajendra Bhatia and Kalyan K. Mukherjea",
  title =        "On weighted {L{\"o}wdin} orthogonalization",
  journal =      j-IJQC,
  volume =       "29",
  number =       "6",
  pages =        "1775--1778",
  month =        jun,
  year =         "1986",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560290609",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 3 12:45:50 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Cizek:1987:RIP,
  author =       "Ji{\v{r}}{\'\i} {\v{C}}{\'\i}{\v{z}}ek and Francine
                 Vinette and Edward R. Vrscay",
  title =        "Renormalized Inner Projection, Symbolic Computation,
                 and {L{\"o}wdin} Rational Approximants in Explicit
                 Form",
  journal =      j-IJQC,
  volume =       "32",
  number =       "S21",
  pages =        "757--758",
  day =          "12",
  month =        mar,
  year =         "1987",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560320778",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Chemistry, Solid-State Theory, and
                 Computational Methods",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Jones:1987:MLF,
  author =       "H. W. Jones and B. Bussery and C. A. Weatherford",
  title =        "An ``{$E$} matrix'' for the {L{\"o}wdin} $ \alpha $
                 function, expanded in a {Taylor} series: an analytic
                 treatment of molecular charge density near the origin",
  journal =      j-IJQC,
  volume =       "32",
  number =       "S21",
  pages =        "693--698",
  day =          "12",
  month =        mar,
  year =         "1987",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560320768",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Oct 10 18:48:38 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1980.bib",
  note =         "Supplement: Proceedings of the International Symposium
                 on Quantum Chemistry, Solid-State Theory, and
                 Computational Methods.",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 Oct 2004",
}

@Article{Kar:1987:CAC,
  author =       "T. Kar and A. B. Sannigrahi and D. C. Mukherjee",
  title =        "Comparison of Atomic Charges, Valencies and Bond
                 Orders in Some Hydrogen-Bonded Complexes Calculated
                 from {Mulliken} and {L{\"o}wdin} {SCF}
                 Density-Matrices",
  journal =      "Theochem --- Journal of Molecular Structure",
  volume =       "38",
  number =       "1--2",
  pages =        "93--101",
  month =        sep,
  year =         "1987",
  ISSN =         "0166-1280 (print), 1872-7999 (electronic)",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Suzuki:1987:CCE,
  author =       "Noboru Suzuki",
  title =        "Comment on {``Compact expression for {L{\"o}wdin}'s
                 alpha function'', [J. Math. Phys. {\bf 26} (1985), no.
                 5, 940--942; MR 86j:33014] by A. A. Antone}",
  journal =      j-J-MATH-PHYS,
  volume =       "28",
  number =       "4",
  pages =        "769--773",
  month =        apr,
  year =         "1987",
  CODEN =        "JMAPAQ",
  ISSN =         "0022-2488 (print), 1089-7658 (electronic), 1527-2427",
  ISSN-L =       "0022-2488",
  MRclass =      "33A70",
  MRnumber =     "88g:33015",
  MRreviewer =   "B. D. Agrawal",
  bibdate =      "Fri Oct 20 17:31:12 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathphys1985.bib",
  note =         "See \cite{Antone:1985:CEL}.",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Physics",
  journal-URL =  "http://jmp.aip.org/",
}

@Article{Jones:1988:AEM,
  author =       "H. W. Jones",
  title =        "Analytical Evaluation of Multicenter Molecular
                 Integrals over {Slater}-Type Orbitals Using Expanded
                 {L{\"o}wdin} Alpha-Functions",
  journal =      j-PHYS-REV-A,
  volume =       "38",
  number =       "2",
  pages =        "1065--1068",
  day =          "15",
  month =        jul,
  year =         "1988",
  CODEN =        "PLRAAN",
  DOI =          "https://doi.org/10.1103/PhysRevA.38.1065",
  ISSN =         "1050-2947 (print), 1094-1622, 1538-4446, 1538-4519",
  ISSN-L =       "1050-2947",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Physical Review A (Atomic, Molecular, and Optical
                 Physics)",
  journal-URL =  "http://pra.aps.org/browse",
}

@Article{Kar:1988:EBS,
  author =       "T. Kar and A. B. Sannigrahi",
  title =        "Effect of Basis Set on {Mulliken} and {L{\"o}wdin}
                 Atomic Charges, Bond Orders and Valencies of Some Polar
                 Molecules",
  journal =      "Theochem --- Journal of Molecular Structure",
  volume =       "42",
  number =       "1--2",
  pages =        "47--54",
  month =        apr,
  year =         "1988",
  ISSN =         "0166-1280 (print), 1872-7999 (electronic)",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Calais:1989:SIQ,
  author =       "J. L. Calais and W. J. Orvillethomas and Z. B.
                 Maksic",
  title =        "Special Issue --- Quantum-Chemistry ---
                 Electronic-Structure of Matter --- a Tribute to
                 {Per-Olov L{\"o}wdin}",
  journal =      "Theochem --- Journal of Molecular Structure",
  volume =       "58",
  number =       "??",
  pages =        "ix--ix",
  month =        sep,
  year =         "1989",
  ISSN =         "0166-1280 (print), 1872-7999 (electronic)",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Jones:1989:LAF,
  author =       "H. W. Jones and C. A. Weatherford",
  title =        "The {L{\"o}wdin} Alpha-Function and its Application to
                 the Multi-Center Molecular Integral Problem over
                 {Slater}-Type Orbitals",
  journal =      "Theochem --- Journal of Molecular Structure",
  volume =       "58",
  number =       "??",
  pages =        "233--243",
  month =        sep,
  year =         "1989",
  ISSN =         "0166-1280 (print), 1872-7999 (electronic)",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Leschber:1989:OPE,
  author =       "Y. Leschber and J. P. Draayer",
  title =        "Orthogonal polynomial expansion for the {L{\"o}wdin}
                 transformation",
  journal =      j-J-PHYS-A,
  volume =       "22",
  number =       "14",
  pages =        "2675--2685",
  month =        "????",
  year =         "1989",
  CODEN =        "JPHAC5",
  DOI =          "https://doi.org/10.1088/0305-4470/22/14/018",
  ISSN =         "0305-4470 (print), 1361-6447 (electronic)",
  ISSN-L =       "0305-4470",
  bibdate =      "Mon Oct 10 15:28:54 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  abstract =     "A set of linearly independent functions is
                 orthogonalised by means of the L{\"o}wdin
                 transformation (1956). A simple method is presented for
                 calculating the orthogonalisation as a polynomial of
                 finite degree in the overlap matrix {$S$}. The method
                 is illustrated for various cases.",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Physics A (Mathematical and General)",
  journal-URL =  "http://iopscience.iop.org/0305-4470",
}

@Article{Chandrakumar:1990:ALP,
  author =       "N. Chandrakumar",
  title =        "Application of {L{\"o}wdin} Projectors to Evaluate
                 Density-Matrix Evolutions",
  journal =      j-MAGN-RESON,
  volume =       "88",
  number =       "1",
  pages =        "86--92",
  month =        jun,
  year =         "1990",
  CODEN =        "JOMRA4",
  DOI =          "https://doi.org/10.1016/0022-2364(90)90110-U",
  ISSN =         "0022-2364 (print), 1557-8968 (electronic)",
  ISSN-L =       "0022-2364",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Magnetic Resonance",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00222364",
}

@Article{Suzuki:1990:SCL,
  author =       "Noboru Suzuki",
  title =        "Simple calculation of {L{\"o}wdin}'s alpha function.
                 {III}. {Procedure} for calculating {$ h_{n, 2n - i}(L M
                 \vert l) / (2 n - i)! $} successively",
  journal =      j-J-MATH-PHYS,
  volume =       "31",
  number =       "9",
  pages =        "2314--2326",
  month =        sep,
  year =         "1990",
  CODEN =        "JMAPAQ",
  DOI =          "https://doi.org/10.1063/1.528639",
  ISSN =         "0022-2488 (print), 1089-7658 (electronic), 1527-2427",
  ISSN-L =       "0022-2488",
  MRclass =      "81V35 (33C70)",
  MRnumber =     "91k:81218",
  MRreviewer =   "B. D. Agrawal",
  bibdate =      "Fri Jan 2 07:23:17 MST 1998",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathphys1990.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Physics",
  journal-URL =  "http://jmp.aip.org/",
}

@Article{Behera:1991:CLC,
  author =       "L. Behera and T. Kar and P. K. Nandi and A. B.
                 Sannigrahi",
  title =        "A Closer Look into the Causes of Discrepancy Between
                 {L{\"o}wdin} and {Mulliken} Atomic Charges",
  journal =      "Theochem --- Journal of Molecular Structure",
  volume =       "82",
  number =       "1--2",
  pages =        "15--21",
  month =        nov,
  year =         "1991",
  ISSN =         "0166-1280 (print), 1872-7999 (electronic)",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Jones:1991:ALA,
  author =       "Herbert W. Jones",
  title =        "Analytic {L{\"o}wdin} alpha-function method for
                 two-center electron-repulsion integrals over
                 {Slater}-type orbitals",
  journal =      j-J-COMPUT-CHEM,
  volume =       "12",
  number =       "10",
  pages =        "1217--1222",
  month =        dec,
  year =         "1991",
  CODEN =        "JCCHDD",
  DOI =          "https://doi.org/10.1002/jcc.540121008",
  ISSN =         "0192-8651 (print), 1096-987X (electronic)",
  ISSN-L =       "0192-8651",
  bibdate =      "Thu Nov 29 14:54:16 MST 2012",
  bibsource =    "http://www.interscience.wiley.com/jpages/0192-8651;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jcomputchem1990.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Computational Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0192-8651",
  onlinedate =   "7 Sep 2004",
}

@Article{Jones:1992:LFO,
  author =       "Herbert W. Jones",
  title =        "{L{\"o}wdin} $ \alpha $-function, overlap integral,
                 and computer algebra",
  journal =      j-IJQC,
  volume =       "41",
  number =       "5",
  pages =        "749--754",
  day =          "5",
  month =        mar,
  year =         "1992",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.560410511",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Tue Oct 4 06:58:35 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1990.bib",
  acknowledgement = ack-nhfb,
  affiliation =  "Dept. of Phys., Florida A and M Univ., Tallahassee,
                 FL, USA",
  ajournal =     "Int. J. Quantum Chem.",
  classification = "A0230 (Function theory, analysis); A3115 (General
                 mathematical and computational developments); A3120
                 (Specific calculations and results); C7310
                 (Mathematics); C7320 (Physics and Chemistry)",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  keywords =     "L{\"o}wdin alpha-function; Overlap integral; Computer
                 algebra; Mathematica; C matrix; Slater-type orbitals;
                 Two-center overlap integral; FORTRAN; Multicenter
                 molecular integrals",
  onlinedate =   "19 Oct 2004",
  thesaurus =    "Integration; Physics computing; STO calculations;
                 Symbol manipulation",
}

@Article{Smirnov:1992:CGC,
  author =       "Y. F. Smirnov and R. F. Wehrhahn",
  title =        "The {Clebsch--Gordan} Coefficients for the
                 $2$-Parameter Quantum Algebra {$ {\rm SU}_{pq}(2) $} in
                 the {L{\"o}wdin--Shapiro} Approach",
  journal =      j-J-PHYS-A,
  volume =       "25",
  number =       "21",
  pages =        "5563--5576",
  day =          "7",
  month =        nov,
  year =         "1992",
  CODEN =        "JPHAC5",
  DOI =          "https://doi.org/10.1088/0305-4470/25/21/015",
  ISSN =         "0305-4470 (print), 1361-6447 (electronic)",
  ISSN-L =       "0305-4470",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Physics A (Mathematical and General)",
  journal-URL =  "http://iopscience.iop.org/0305-4470",
}

@Article{Suzuki:1992:SCL,
  author =       "Noboru Suzuki",
  title =        "Simple calculation of {L{\"o}wdin}'s alpha function.
                 {IV}. {Procedure} for evaluating the coefficients in
                 expansion of a {Slater}-type atomic orbital",
  journal =      j-J-MATH-PHYS,
  volume =       "33",
  number =       "12",
  pages =        "4288--4299",
  month =        dec,
  year =         "1992",
  CODEN =        "JMAPAQ",
  DOI =          "https://doi.org/10.1063/1.529831",
  ISSN =         "0022-2488 (print), 1089-7658 (electronic), 1527-2427",
  ISSN-L =       "0022-2488",
  MRclass =      "81V55 (33C70)",
  MRnumber =     "93m:81166",
  MRreviewer =   "B. D. Agrawal",
  bibdate =      "Fri Jan 2 07:23:17 MST 1998",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathphys1990.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Physics",
  journal-URL =  "http://jmp.aip.org/",
}

@TechReport{Wehrhahn:1992:CGC,
  author =       "R. F. Wehrhahn and Yu. F. Smirnov",
  title =        "The {Clebsch--Gordan} coefficients for the two
                 parameter quantum algebras {$ {\rm SU}_{p, q}(2) $} in
                 the {L}{\"o}wdin--Shapiro approach",
  type =         "Report",
  number =       "DESY-92-024",
  institution =  "Universit{\"a}t Hamburg",
  address =      "Hamburg, Germany",
  pages =        "25",
  month =        feb,
  year =         "1992",
  bibdate =      "Mon Oct 10 16:10:21 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Linderberg:1993:LPO,
  author =       "J. Linderberg",
  title =        "{Per-Olov L{\"o}wdin} Honorary Issue --- Preface",
  journal =      j-THEOR-CHIM-ACTA,
  volume =       "86",
  number =       "1--2",
  pages =        "1--2",
  month =        jul,
  year =         "1993",
  CODEN =        "TCHAAM",
  DOI =          "https://doi.org/10.1007/BF01113511",
  ISSN =         "0040-5744",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Theoretica Chimica Acta",
  journal-URL =  "http://link.springer.com/journal/214",
}

@Article{Vikictopic:1995:LAC,
  author =       "D. Vikictopic and E. D. Becker and M. Hodoscek and A.
                 Graovac",
  title =        "{L{\"o}wdin} Atomic Charges for Modeling Long-Range
                 Deuterium-Isotope Shifts in {C-13 NMR}-Spectra of
                 Binuclear Aromatic Compounds",
  journal =      j-CROAT-CHEM-ACTA,
  volume =       "68",
  number =       "1",
  pages =        "193--203",
  month =        apr,
  year =         "1995",
  CODEN =        "CCACAA",
  ISSN =         "0011-1643 (print), 1334-417x (electronic)",
  ISSN-L =       "0011-1643",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Croatica Chemica Acta",
  journal-URL =  "http://public.carnet.hr/ccacaa/",
}

@Article{Mezey:1997:QSM,
  author =       "Paul G. Mezey",
  title =        "Quantum Similarity Measures and {L{\"o}wdin}'s
                 Transform for Approximate Density Matrices and
                 Macromolecular Forces",
  journal =      j-IJQC,
  volume =       "63",
  number =       "1",
  pages =        "39--48",
  day =          "15",
  month =        may,
  year =         "1997",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/(SICI)1097-461X(1997)63:1<39::AID-QUA8>3.0.CO%3B2-3",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Tue Oct 4 06:59:08 MDT 2011",
  bibsource =    "Compendex database;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1990.bib;
                 http://www3.interscience.wiley.com/journalfinder.html",
  URL =          "http://www3.interscience.wiley.com/cgi-bin/abstract?ID=42579;
                 http://www3.interscience.wiley.com/cgi-bin/fulltext?ID=42579&PLACEBO=IE.pdf",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  journalabr =   "Int J Quant Chem",
  onlinedate =   "6 Dec 1998",
}

@Article{Lepadatu:1999:OMD,
  author =       "C. Lepadatu and H. Adamsky and H. H. Schmidtke",
  title =        "$s$-Orbital mixing into $d$-orbital manifolds in
                 complex compounds analyzed using {L{\"o}wdin}'s
                 orthogonalization procedure",
  journal =      j-J-MOL-STRUCT-THEOCHEM,
  volume =       "488",
  number =       "??",
  pages =        "241--245",
  month =        oct,
  year =         "1999",
  CODEN =        "THEODJ",
  ISSN =         "0166-1280 (print), 1872-7999 (electronic)",
  ISSN-L =       "0166-1280",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Molecular Structure. Theochem",
  journal-URL =  "http://www.sciencedirect.com/science/journal/01661280",
}

@Article{Tchougreeff:1999:GFL,
  author =       "A. L. Tchougreeff",
  title =        "Group functions, {L{\"o}wdin} partition, and hybrid
                 {QC\slash MM} methods for large molecular systems",
  journal =      j-PHYS-CHEM-CHEM-PHYS,
  volume =       "1",
  number =       "6",
  pages =        "1051--1060",
  day =          "15",
  month =        mar,
  year =         "1999",
  CODEN =        "PPCPFQ",
  DOI =          "https://doi.org/10.1039/a808668k",
  ISSN =         "1463-9076 (print), 1463-9084 (electronic)",
  ISSN-L =       "1463-9076",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Physical Chemistry Chemical Physics: PCCP",
  journal-URL =  "http://pubs.rsc.org/en/journals/journal/cp",
}

@Article{Roos:2000:PQT,
  author =       "Bj{\"o}rn Roos",
  title =        "Perspective on {``Quantum theory of many-particle
                 systems I, II, and II'', L{\"o}wdin P-O (1955) Phys.
                 Rev. 97:1474--1520}",
  journal =      j-THEOR-CHEM-ACCOUNTS,
  volume =       "103",
  number =       "3",
  pages =        "228--230",
  month =        "????",
  year =         "2000",
  CODEN =        "TCACFW",
  DOI =          "https://doi.org/10.1007/s002149900076",
  ISSN =         "1432-881X (print), 1432-2234 (electronic)",
  ISSN-L =       "1432-2234",
  bibdate =      "Tue Dec 26 12:00:14 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "This paper gives a historical review of the influence
                 of the famous three 1955 papers.",
  acknowledgement = ack-nhfb,
  fjournal =     "Theoretical Chemistry Accounts",
  journal-URL =  "http://link.springer.com/journal/214",
}

@Article{Hamza:2001:ORLa,
  author =       "A. Hamza and I. Mayer",
  title =        "Overlap repulsion with {L{\"o}wdin}'s pairing
                 theorem",
  journal =      j-IJQC,
  volume =       "82",
  number =       "2",
  pages =        "53--59",
  month =        "????",
  year =         "2001",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/1097-461X(2001)82:2<53::AID-QUA1029>3.0.CO%3B2-B",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Apr 4 11:48:37 MDT 2001",
  bibsource =    "http://www.interscience.wiley.com/jpages/0020-7608;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2000.bib;
                 http://www3.interscience.wiley.com/journalfinder.html",
  URL =          "http://www3.interscience.wiley.com/cgi-bin/abstract/77502751/START;
                 http://www3.interscience.wiley.com/cgi-bin/fulltext/77502751/FILE?TPL=ftx_start;
                 http://www3.interscience.wiley.com/cgi-bin/fulltext?ID=77502751&PLACEBO=IE.pdf",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Hamza:2001:ORLb,
  author =       "A. Hamza and I. Mayer",
  title =        "Overlap repulsion with {L{\"o}wdin}'s pairing theorem
                 {II}. {The} leading term",
  journal =      j-IJQC,
  volume =       "82",
  number =       "3",
  pages =        "105--112",
  month =        "????",
  year =         "2001",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/1097-461X(2001)82:3<105::AID-QUA1016>3.0.CO%3B2-S",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Apr 4 11:48:38 MDT 2001",
  bibsource =    "http://www.interscience.wiley.com/jpages/0020-7608;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2000.bib;
                 http://www3.interscience.wiley.com/journalfinder.html",
  URL =          "http://www3.interscience.wiley.com/cgi-bin/abstract/77004286/START;
                 http://www3.interscience.wiley.com/cgi-bin/fulltext/77004286/FILE?TPL=ftx_start;
                 http://www3.interscience.wiley.com/cgi-bin/fulltext?ID=77004286&PLACEBO=IE.pdf",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Ohrn:2001:POL,
  author =       "Yngve {\"O}hrn and John R. Sabin and Erkki
                 Br{\"a}ndas",
  title =        "{Per-Olov L{\"o}wdin} 1916--2000",
  journal =      j-IJQC,
  volume =       "81",
  number =       "1",
  pages =        "i--ii",
  month =        "????",
  year =         "2001",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/1097-461X(2001)81:1<1::AID-QUA1>3.0.CO%3B2-9",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Apr 4 11:48:28 MDT 2001",
  bibsource =    "http://www.interscience.wiley.com/jpages/0020-7608;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2000.bib;
                 http://www3.interscience.wiley.com/journalfinder.html",
  URL =          "http://www3.interscience.wiley.com/cgi-bin/abstract/75502160/START;
                 http://www3.interscience.wiley.com/cgi-bin/fulltext/75502160/FILE?TPL=ftx_start;
                 http://www3.interscience.wiley.com/cgi-bin/fulltext?ID=75502160&PLACEBO=IE.pdf",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Allen:2002:LCO,
  author =       "Leland C. Allen and Eugene T. Knight",
  title =        "The {L{\"o}wdin} challenge: {Origin} of the $ n +
                 \ell, n $ ({Madelung}) rule for filling the orbital
                 configurations of the periodic table",
  journal =      j-IJQC,
  volume =       "90",
  number =       "1",
  pages =        "80--88",
  month =        "????",
  year =         "2002",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.965",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Sep 30 09:31:20 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2000.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "10 Jun 2002",
}

@Article{Anonymous:2002:POL,
  author =       "Anonymous",
  title =        "{Per-Olov L{\"o}wdin} curriculum vitae",
  journal =      j-IJQC,
  volume =       "90",
  number =       "1",
  pages =        "1--11",
  month =        "????",
  year =         "2002",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.10096",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Sep 30 09:31:20 MDT 2011",
  bibsource =    "http://www.interscience.wiley.com/jpages/0020-7608;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2000.bib;
                 http://www3.interscience.wiley.com/journalfinder.html",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "10 Jun 2002",
}

@Article{Karlsson:2002:SEI,
  author =       "G{\"o}ran Karlsson",
  title =        "The scientific, educational and internationalization
                 influence of {Per-Olov L{\"o}wdin}",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "41",
  pages =        "1--8",
  year =         "2002",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(02)41043-X",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276",
  URL =          "http://www.sciencedirect.com/science/article/pii/S006532760241043X",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Kryachko:2002:OSP,
  author =       "Eugene S. Kryachko",
  title =        "The origin of spontaneous point mutations in {DNA} via
                 {L{\"o}wdin} mechanism of proton tunneling in {DNA}
                 base pairs: {Cure} with covalent base pairing",
  journal =      j-IJQC,
  volume =       "90",
  number =       "2",
  pages =        "910--923",
  month =        "????",
  year =         "2002",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.975",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Sep 30 09:31:21 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2000.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "26 Feb 2002",
}

@Article{Linderberg:2002:AQC,
  author =       "Jan Linderberg and Yngve {\"O}hrn and John R. Sabin",
  title =        "Advancing quantum chemistry: {Per-Olov L{\"o}wdin}
                 1916--2000",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "41",
  pages =        "x--xv",
  year =         "2002",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/S0065-3276(02)41042-8",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Oct 13 11:45:04 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib;
                 http://www.sciencedirect.com/science/bookseries/00653276",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327602410428",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Mayer:2002:HFM,
  author =       "I. Mayer",
  title =        "{Hermitian} {Fock} matrix in the chemical
                 {Hamiltonian} approach: {Fulfilling L{\"o}wdin}'s
                 prediction",
  journal =      j-IJQC,
  volume =       "90",
  number =       "1",
  pages =        "89--91",
  month =        "????",
  year =         "2002",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.982",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Sep 30 09:31:20 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2000.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "6 Feb 2002",
}

@Article{Mayer:2002:LMS,
  author =       "I. Mayer",
  title =        "On {L{\"o}wdin}'s method of symmetric
                 orthogonalization",
  journal =      j-IJQC,
  volume =       "90",
  number =       "1",
  pages =        "63--65",
  month =        "????",
  year =         "2002",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.981",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Sep 30 09:31:20 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2000.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "28 Feb 2002",
}

@Article{Ohrn:2002:SID,
  author =       "N. Y. Ohrn and J. R. Sabin",
  title =        "Special issue: Dedicated to {Per-Olov L{\"o}wdin} ---
                 {Part I} of {II} --- Introduction",
  journal =      j-IJQC,
  volume =       "90",
  number =       "1",
  pages =        "12--13",
  month =        oct,
  year =         "2002",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.930",
  ISSN =         "0020-7608 (print), 1097-461x (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Sutcliffe:2002:SOP,
  author =       "Brian Sutcliffe",
  title =        "Some observations on {P.-O}. {L{\"o}wdin}'s definition
                 of a molecule",
  journal =      j-IJQC,
  volume =       "90",
  number =       "1",
  pages =        "66--79",
  month =        "????",
  year =         "2002",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.1819",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Sep 30 09:31:20 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2000.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "3 Dec 2001",
}

@Article{Linderberg:2003:BMP,
  author =       "Jan Linderberg",
  title =        "Biographical Memoir: {Per-Olov L{\"o}wdin: 28 October
                 1916--6 October 2000}",
  journal =      j-PROC-AMER-PHIL-SOC,
  volume =       "147",
  number =       "2",
  pages =        "175--180",
  month =        jun,
  year =         "2003",
  CODEN =        "PAPCAA",
  ISSN =         "0003-049X (print), 2326-9243 (electronic)",
  ISSN-L =       "0003-049X",
  bibdate =      "Sat Jun 11 10:25:26 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://www.amphilsoc.org/sites/default/files/210.pdf;
                  http://www.jstor.org/stable/1558261",
  acknowledgement = ack-nhfb,
  fjournal =     "Proceedings of the {American Philosophical Society}
                 held at {Philadelphia} for promoting useful knowledge",
  journal-URL =  "http://www.jstor.org/journal/procamerphilsoci",
}

@Article{Meissner:2003:LPT,
  author =       "H. Meissner",
  title =        "On {L{\"o}wdin}'s projection technique and the
                 energy-corrected approaches",
  journal =      j-J-CHEM-PHYS,
  volume =       "119",
  number =       "8",
  pages =        "4126--4133",
  month =        aug,
  year =         "2003",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1592151",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@InCollection{Amos:2004:EOO,
  author =       "A. T. Amos and B. L. Burrows and S. G. Davison",
  title =        "Effects of Orbital Overlap on Calculations of Charge
                 Exchange in Atom--Surface Scattering",
  crossref =     "Brandas:2004:FWQ",
  pages =        "295--321",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Andre:2004:SCP,
  author =       "Jean-Marie Andr{\'e}",
  title =        "{{\em In Silico\/}} Chemistry: Past, Present and
                 Future",
  crossref =     "Brandas:2004:FWQ",
  pages =        "3--21",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Bersuker:2004:RCJ,
  author =       "I. B. Bersuker",
  title =        "Reformulation of the Concept of {Jahn--Teller}
                 Vibronic Coupling Effects in Theoretical Chemistry",
  crossref =     "Brandas:2004:FWQ",
  pages =        "257--271",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Bidon-Chanal:2004:SSI,
  author =       "Axel Bidon-Chanal F. Javier Luque",
  title =        "Solute--Solvent Interactions from {QM SCRF} Methods",
  crossref =     "Brandas:2004:FWQ",
  pages =        "475--495",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Boyd:2004:BRB,
  author =       "Russell J. Boyd",
  title =        "Book Review: {{\booktitle{Fundamental World of Quantum
                 Chemistry: A Tribute to the Memory of Per-Olov
                 L{\"o}wdin}}, Volumes 1 and 2 Edited by Erkki J.
                 Br{\"a}ndas (Uppsala University) and Eugene S. Kryachko
                 (Bogoliubov Institute for Theoretical Physics, Kiev,
                 and University of Leuven, Belgium). Kluwer Academic
                 Publishers: Dordrecht. 2003. xxxii + 678 pp (Volume 1)
                 and xxxii + 696 pp (Volume 2). \$450.00 (set). ISBN:
                 1-4020-1286-1 (set)}",
  journal =      j-JACS,
  volume =       "126",
  number =       "21",
  pages =        "6836--6836",
  day =          "28",
  month =        apr,
  year =         "2004",
  CODEN =        "JACSAT",
  DOI =          "https://doi.org/10.1021/ja0336269",
  ISSN =         "0002-7863 (print), 1520-5126 (electronic), 1943-2984",
  ISSN-L =       "0002-7863",
  bibdate =      "Mon Oct 10 14:39:49 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of the American Chemical Society",
  journal-URL =  "http://pubs.acs.org/journal/jacsat",
}

@InCollection{Bubin:2004:QMC,
  author =       "Sergiy Bubin and Mauricio Cafiero and Ludwik
                 Adamowicz",
  title =        "Quantum Mechanical Calculations on Molecules
                 Containing Positrons",
  crossref =     "Brandas:2004:FWQ",
  pages =        "521--545",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Burrows:2004:SWE,
  author =       "B. L. Burrows and M. Cohen",
  title =        "{Schr{\"o}dinger}'s Wave Equation --- A {Lie} Algebra
                 Treatment",
  crossref =     "Brandas:2004:FWQ",
  pages =        "43--65",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Canuto:2004:HBE,
  author =       "Sylvio Canuto and Kaline Coutinho",
  title =        "Hydrogen Bonding and the Energetics of Homolytic
                 Dissociation in Solution",
  crossref =     "Brandas:2004:FWQ",
  pages =        "581--599",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Carbo-Dorca:2004:DVW,
  author =       "Ramon Carb{\'o}-Dorca",
  title =        "Discussion on the variable {Wolfsberg--Helmholtz}
                 parameter, a new simplified {L{\"o}wdin} transformation
                 and the characteristic structure of the transformed
                 {EHT Hamiltonian} matrices",
  journal =      j-IJQC,
  volume =       "98",
  number =       "1",
  pages =        "26--32",
  month =        "????",
  year =         "2004",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.20011",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Oct 1 08:42:59 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2000.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "17 Feb 2004",
}

@Article{Clark:2004:DWF,
  author =       "A. E. Clark and J. L. Sonnenberg and P. J. Hay and R.
                 L. Martin",
  title =        "Density and wave function analysis of actinide
                 complexes: What can fuzzy atom, atoms-in-molecules,
                 {Mulliken}, {L{\"o}wdin}, and natural population
                 analysis tell us?",
  journal =      j-J-CHEM-PHYS,
  volume =       "121",
  number =       "6",
  pages =        "2563--2570",
  month =        aug,
  year =         "2004",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.1766292",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  ISSN-L =       "0021-9606",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@InCollection{Coote:2004:UAS,
  author =       "Michelle L. Coote and Addy Pross and Leo Radom",
  title =        "Understanding Alkyl Substituent Effects in {R--O} Bond
                 Dissociation Reactions in Open- and Closed-Shell
                 Systems",
  crossref =     "Brandas:2004:FWQ",
  pages =        "563--579",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Goidenko:2004:QEH,
  author =       "Igor Goidenko and Leonti Labzowsky",
  title =        "{QED} Effects in Heavy Elements",
  crossref =     "Brandas:2004:FWQ",
  pages =        "407--421",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Hall:2004:POL,
  author =       "G. G. Hall",
  title =        "{Per-Olov L{\"o}wdin}",
  crossref =     "Brandas:2004:FWQ",
  pages =        "1--2",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Harris:2004:IEC,
  author =       "Frank E. Harris",
  title =        "Integrals for Exponentially Correlated Four-Body
                 Systems of General Angular Symmetry",
  crossref =     "Brandas:2004:FWQ",
  pages =        "115--127",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Jansson:2004:TCK,
  author =       "C. M. Jansson and N. Salhi-Benachenhou and S. Lunell",
  title =        "Theoretical Calculations of Kinetic Isotope Effects
                 for a Series of Substituted Aziridines",
  crossref =     "Brandas:2004:FWQ",
  pages =        "601--617",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Katriel:2004:WSP,
  author =       "Jacob Katriel",
  title =        "Weights of Spin and Permutational Symmetry Adapted
                 States for Arbitrary Elementary Spins",
  crossref =     "Brandas:2004:FWQ",
  pages =        "23--41",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Kibler:2004:SQM,
  author =       "M. R. Kibler and M. Daoud",
  title =        "On Supersymmetric Quantum Mechanics",
  crossref =     "Brandas:2004:FWQ",
  pages =        "67--96",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Krems:2004:CAM,
  author =       "Roman Krems and Alexander Dalgarno",
  title =        "Collisions of Atoms and Molecules in External Magnetic
                 Fields",
  crossref =     "Brandas:2004:FWQ",
  pages =        "273--294",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Langhoff:2004:ALM,
  author =       "P. W. Langhoff and J. A. Boatz and R. J. Hinde",
  title =        "Applications of {L{\"o}wdin}'s Metric Matrix: Atomic
                 Spectral Methods for Electronic Structure
                 Calculations",
  crossref =     "Brandas:2004:FWQ",
  pages =        "97--114",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Larsson:2004:QCL,
  author =       "Sven Larsson",
  title =        "Quantum Chemistry, Localization, Superconductivity,
                 and {Mott--Hubbard} {$U$}",
  crossref =     "Brandas:2004:FWQ",
  pages =        "247--256",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Lazzeretti:2004:UAI,
  author =       "Paolo Lazzeretti",
  title =        "Unified Approach to Intensities in Vibrational
                 Spectroscopies VIA Dynamic Electromagnetic Shieldings
                 at the Nuclei of a Molecule",
  crossref =     "Brandas:2004:FWQ",
  pages =        "199--213",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Lindgren:2004:CBM,
  author =       "Ingvar Lindgren",
  title =        "Comparison Between the Many-Body Perturbative and
                 {Green}'s-Function Approaches for Calculating Electron
                 Binding Energies and Affinities: {Brueckner} and
                 {Dyson} Orbitals",
  crossref =     "Brandas:2004:FWQ",
  pages =        "215--245",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Mahalakshmi:2004:LLI,
  author =       "S. Mahalakshmi and Danny L. Yeager",
  title =        "Low-Lying Ionization Potentials of {B$_3$N} and
                 Photodetachment Energies of {B$_3$N$^-$} Using the
                 Multiconfigurational Spin Tensor Electron Propagator
                 Method",
  crossref =     "Brandas:2004:FWQ",
  pages =        "547--561",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Malli:2004:RQC,
  author =       "Gulzari L. Malli",
  title =        "Relativistic Quantum Chemistry of Heavy and Superheavy
                 Elements: Fully Relativistic Coupled-Cluster
                 Calculations for Molecules of Heavy and Transactinide
                 Superheavy Elements",
  crossref =     "Brandas:2004:FWQ",
  pages =        "323--363",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Mayer:2004:TNP,
  author =       "Istv{\'a}n Mayer and Andrea Hamza",
  title =        "Treating Nonadditivity as a Perturbation: a
                 Quasi-Particle Formalism",
  crossref =     "Brandas:2004:FWQ",
  pages =        "187--198",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Naidu:2004:LCO,
  author =       "A. Ramesh Naidu and Vipin Srivastava",
  title =        "{L{\"o}wdin}'s canonical orthogonalization: {Getting}
                 round the restriction of linear independence",
  journal =      j-IJQC,
  volume =       "99",
  number =       "6",
  pages =        "882--888",
  month =        "????",
  year =         "2004",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.20136",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Oct 1 08:43:01 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2000.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "14 Jul 2004",
}

@Article{Park:2003:HQC,
  author =       "Buhm Soon Park",
  title =        "The `Hyperbola of Quantum Chemistry': the Changing
                 Practice and Identity of a Scientific Discipline in the
                 Early Years of Electronic Digital Computers, 1945--65",
  journal =      j-ANN-SCIENCE,
  volume =       "60",
  number =       "3",
  pages =        "219--247",
  year =         "2003",
  CODEN =        "ANNSA8",
  DOI =          "????",
  ISSN =         "0003-3790 (print), 1464-505X (electronic)",
  ISSN-L =       "0003-3790",
  bibdate =      "Mon Jan 29 05:52:21 2018",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/s/slater-john-clarke.bib;
                 https://www.math.utah.edu/pub/tex/bib/annscience.bib;
                 https://www.math.utah.edu/pub/tex/bib/gnu.bib",
  URL =          "http://www.ingentaconnect.com/content/tandf/tasc/2003/00000060/00000003/art00001",
  acknowledgement = ack-nhfb,
  fjournal =     "Annals of Science",
  journal-URL =  "http://www.tandfonline.com/loi/tasc20",
  onlinedate =   "05 Nov 2010",
  remark =       "This article is missing from the publisher Web site; I
                 found a reference to it in a paper, and a Web search
                 found it listed on ingentaconnect.com at the URL in
                 this entry, but the DOI listed at that site is that of
                 entry Mills:2004:EHI in this journal. Problem reported
                 to publisher staff on 29 January 2018.",
}

@InCollection{Quack:2004:TTR,
  author =       "Martin Quack",
  title =        "Time and Time Reversal Symmetry in Quantum Chemical
                 Kinetics",
  crossref =     "Brandas:2004:FWQ",
  pages =        "423--474",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Reiher:2004:BRBa,
  author =       "Markus Reiher",
  title =        "Book Review: {{\booktitle{Fundamental World of Quantum
                 Chemistry. A Tribute to the Memory of Per-Olov
                 L{\"o}wdin}}. 2 B{\"a}nde. Fundamental World of Quantum
                 Chemistry. A Tribute to the Memory of Per-Olov
                 L{\"o}wdin. 2 B{\"a}nde. Herausgegeben von Erkki J.
                 Br{\"a}ndas und Eugene S. Kryachko}",
  journal =      j-ANGEW-CHEM,
  volume =       "116",
  number =       "25",
  pages =        "3281--3282",
  day =          "21",
  month =        jun,
  year =         "2004",
  CODEN =        "ANCEAD",
  DOI =          "https://doi.org/10.1002/ange.200385109",
  ISSN =         "0044-8249 (print), 1521-3757 (electronic)",
  ISSN-L =       "0044-8249",
  bibdate =      "Mon Oct 10 16:19:57 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://onlinelibrary.wiley.com/doi/10.1002/ange.200385109",
  acknowledgement = ack-nhfb,
  fjournal =     "Angewandte Chemie",
  journal-URL =  "http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-3757",
}

@Article{Reiher:2004:BRBb,
  author =       "Markus Reiher",
  title =        "Book Review: {{\booktitle{Fundamental World of Quantum
                 Chemistry. A Tribute to the Memory of Per-Olov
                 L{\"o}wdin}}. Vols. I and II. Edited by Erkki J.
                 Br{\"a}ndas and Eugene S. Kryachko}",
  journal =      j-ANGEW-CHEM-INT-ED,
  volume =       "43",
  number =       "25",
  pages =        "3219--3220",
  day =          "21",
  month =        jun,
  year =         "2004",
  CODEN =        "ACIEF5",
  DOI =          "https://doi.org/10.1002/anie.200385109",
  ISSN =         "1433-7851 (print), 1521-3773 (electronic)",
  ISSN-L =       "1433-7851",
  bibdate =      "Mon Oct 10 16:30:52 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://onlinelibrary.wiley.com/doi/10.1002/anie.200385109/abstract",
  acknowledgement = ack-nhfb,
  fjournal =     "Angewandte Chemie, International Edition",
  journal-URL =  "http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-3773/issues",
}

@InCollection{Schwarz:2004:TPE,
  author =       "W. H. Eugen Schwarz",
  title =        "Towards a Physical Explanation of the Periodic Table
                 ({PT}) of Chemical Elements",
  crossref =     "Brandas:2004:FWQ",
  pages =        "645--669",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Szabados:2004:ASP,
  author =       "P{\'e}ter R. Surj{\'a}n and {\'A}gnes Szabados",
  title =        "Appendix to {``\booktitle{Studies in Perturbation
                 Theory}''}: The Problem of Partitioning",
  crossref =     "Brandas:2004:FWQ",
  pages =        "129--185",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Tsipis:2004:ECC,
  author =       "C. A. Tsipis and A. C. Tsipis and C. E. Kefalidis",
  title =        "Exploring the Catalytic Cycle of the Hydrosilylation
                 of Alkenes Catalyzed by Hydrido-Bridged Diplatinum
                 Complexes Using Electronic Structure Calculation
                 Methods",
  crossref =     "Brandas:2004:FWQ",
  pages =        "619--643",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{Tulub:2004:CMS,
  author =       "A. V. Tulub",
  title =        "The Cavity Model with a Surface Formed by two
                 Intersecting Spheres. An Analytical Treatment",
  crossref =     "Brandas:2004:FWQ",
  pages =        "497--520",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@InCollection{UziKaldor:2004:SHE,
  author =       "Ephraim Eliav {Uzi Kaldor, Arie Landau}",
  title =        "Study of Heavy Elements by Relativistic {Fock} Space
                 and Intermediate {Hamiltonian} Coupled Cluster
                 Methods",
  crossref =     "Brandas:2004:FWQ",
  pages =        "365--406",
  year =         "2004",
  bibdate =      "Sat Dec 07 17:27:47 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Bouferguene:2005:ATS,
  author =       "Ahmed Bouferguene",
  title =        "Addition theorem of {Slater} type orbitals: a
                 numerical evaluation of {Barnett--Coulson\slash
                 L{\"o}wdin} functions",
  journal =      j-J-PHYS-A,
  volume =       "28",
  number =       "13",
  pages =        "2899--2916",
  year =         "2005",
  CODEN =        "JPHAC5",
  DOI =          "https://doi.org/10.1088/0305-4470/38/13/006",
  ISSN =         "0305-4470 (print), 1361-6447 (electronic)",
  ISSN-L =       "0305-4470",
  bibdate =      "Mon Oct 10 15:30:05 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  abstract =     "When using the one-centre two-range expansion method
                 to evaluate multicentre integrals over Slater type
                 orbitals (STOs), it may become necessary to compute
                 numerical values of the corresponding Fourier
                 coefficients, also known as Barnett--Coulson\slash
                 L{\"o}wdin Functions (BCLFs) (Bouferguene and Jones
                 1998 J. Chem. Phys. 109 5718). To carry out this task,
                 it is crucial to not only have a stable numerical
                 procedure but also a fast algorithm. In previous work
                 (Bouferguene and Rinaldi 1994 Int. J. Quantum Chem. 50
                 21), BCLFs were represented by a double integral which
                 led to a numerically stable algorithm but this turned
                 out to be disappointingly time consuming. The present
                 work aims at exploring another path in which BCLFs are
                 represented either by an infinite series involving
                 modified Bessel functions {$ K_\nu (\sqrt {a^2 + r^2})
                 $} or by an integral whose integrand is a smooth
                 function. Both of these representations have the
                 advantage of being symmetrical with respect to the cusp
                 parameter $a$ and the radial variable $r$. As a
                 consequence, it is no longer necessary to split the
                 integrals over $ r \in [0, + \infty) $ into several
                 components with a different analytical form in each of
                 these. A numerical study is also carried out to help
                 select the most appropriate method to be used in
                 practice.",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Physics A (Mathematical and General)",
  journal-URL =  "http://iopscience.iop.org/0305-4470",
}

@Article{Boyd:2005:BRB,
  author =       "Russell J. Boyd",
  title =        "Book Review: {{\booktitle{Fundamental World of Quantum
                 Chemistry: A Tribute to the Memory of Per-Olov
                 L{\"o}wdin}}, Volume III Edited by Erkki J. Br{\"a}ndas
                 (Uppsala University, Sweden) and Eugene S. Kryachko
                 (Bogoliubov Institute for Theoretical Physics, Kiev,
                 Ukraine, and University of Leuven, Belgium). Kluwer
                 Academic Publishers: Dordrecht, The Netherlands. 2004.
                 xlvi + 677 pp. \$225.00. ISBN 1-4020-2583-1}",
  journal =      j-JACS,
  volume =       "127",
  number =       "41",
  pages =        "14526--14526",
  day =          "9",
  month =        sep,
  year =         "2005",
  CODEN =        "JACSAT",
  ISSN =         "0002-7863 (print), 1520-5126 (electronic), 1943-2984",
  ISSN-L =       "0002-7863",
  bibdate =      "Mon Oct 10 14:38:15 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of the American Chemical Society",
  journal-URL =  "http://pubs.acs.org/journal/jacsat",
}

@Article{Sovic:2005:NME,
  author =       "N. Sovic and J. D. Talman",
  title =        "Numerical methods for the evaluation of the
                 {L{\"o}wdin} alpha-function",
  journal =      j-COLLECT-CZECH-CHEM-COMMUN,
  volume =       "70",
  number =       "8",
  pages =        "1035--1054",
  month =        "????",
  year =         "2005",
  CODEN =        "CCCCAK",
  DOI =          "https://doi.org/10.1135/cccc20051035",
  ISSN =         "0010-0765 (print), 1212-6950 (electronic)",
  ISSN-L =       "0010-0765",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Collection of Czechoslovak Chemical Communications",
  journal-URL =  "http://cccc.uochb.cas.cz/archive/",
}

@Article{Bouferguene:2006:GBQ,
  author =       "Ahmed Bouferguene and Hassan Safouhi",
  title =        "{Gauss--Bessel} quadrature: a tool for the evaluation
                 of {Barnett--Coulson\slash L{\"o}wdin} functions",
  journal =      j-IJQC,
  volume =       "106",
  number =       "11",
  pages =        "2398--2407",
  month =        "????",
  year =         "2006",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.21079",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Oct 1 10:38:47 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2000.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "17 May 2006",
}

@Article{Bruhn:2006:LPA,
  author =       "George Bruhn and Ernest R. Davidson and Istvan Mayer
                 and Aurora E. Clark",
  title =        "{L{\"o}wdin} population analysis with and without
                 rotational invariance",
  journal =      j-IJQC,
  volume =       "106",
  number =       "9",
  pages =        "2065--2072",
  month =        "????",
  year =         "2006",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.20981",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Sat Oct 1 10:38:46 MDT 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2000.bib",
  acknowledgement = ack-nhfb,
  ajournal =     "Int. J. Quantum Chem.",
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "17 Mar 2006",
}

@Article{Scerri:2006:CAK,
  author =       "Eric R. Scerri",
  title =        "Commentary on {Allen \& Knight}'s Response to the
                 {L{\"o}wdin Challenge}",
  journal =      j-FOUND-CHEM,
  volume =       "8",
  number =       "3",
  pages =        "285--292",
  month =        oct,
  year =         "2006",
  CODEN =        "FOCHFL",
  DOI =          "https://doi.org/10.1007/s10698-006-9009-7",
  ISSN =         "1386-4238 (print), 1572-8463 (electronic)",
  ISSN-L =       "1386-4238",
  bibdate =      "Thu Apr 9 07:30:49 MDT 2015",
  bibsource =    "http://link.springer.com/journal/10698/8/3;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/foundchem.bib",
  URL =          "http://link.springer.com/article/10.1007/s10698-006-9009-7",
  acknowledgement = ack-nhfb,
  fjournal =     "Foundations of Chemistry",
  journal-URL =  "http://link.springer.com/journal/10698",
}

@Article{Bochevarov:2007:SSR,
  author =       "Arteum D. Bochevarov and C. David Sherrill",
  title =        "Some Simple Results Following from {L{\"o}wdin}'s
                 Partitioning Technique",
  journal =      j-J-MATH-CHEM,
  volume =       "42",
  number =       "1",
  pages =        "59--64",
  month =        jul,
  year =         "2007",
  CODEN =        "JMCHEG",
  DOI =          "https://doi.org/10.1007/s10910-006-9097-6",
  ISSN =         "0259-9791 (print), 1572-8897 (electronic)",
  ISSN-L =       "0259-9791",
  bibdate =      "Thu Apr 9 18:14:09 MDT 2015",
  bibsource =    "http://link.springer.com/journal/10910/42/1;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathchem.bib",
  URL =          "http://link.springer.com/article/10.1007/s10910-006-9097-6",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Chemistry",
  journal-URL =  "http://link.springer.com/journal/10910",
  journalabr =   "J. Math. Chem.",
}

@InCollection{Bolcer:2007:DCC,
  author =       "John D. Bolcer and Robert B. Hermann",
  booktitle =    "Reviews in Computational Chemistry",
  title =        "The Development of Computational Chemistry in the
                 {United States}",
  volume =       "5",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  bookpages =    "xxi + 458",
  pages =        "1--63",
  month =        jan,
  year =         "2007",
  DOI =          "https://doi.org/10.1002/9780470125823.ch1",
  ISSN =         "1069-3599 (print), 1934-5372 (electronic)",
  ISSN-L =       "1069-3599",
  LCCN =         "QD39.3.E46 R48",
  bibdate =      "Tue Feb 20 18:51:54 2018",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/h/harris-frank-e.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/gnu.bib",
  URL =          "http://onlinelibrary.wiley.com/bookseries/10.1002/SERIES6143",
  acknowledgement = ack-nhfb,
  remark-01 =    "From page 47: ``Following the 1970 conference [NRC
                 Committee on Computers in Chemistry. Held on May 8--9,
                 1970], F. A. Matsen, Harrison Shull, Peter Lykos
                 [conference chair], and Frank Harris, a physicist at
                 the University of Utah, were designated to draft the
                 conference report and to ``take appropriate steps to
                 initiate implementation of the recommendations.''\,''",
  remark-02 =    "From page 51: ``In 1974 about \$700 million had been
                 spent on computing in administration, teaching, and
                 research. Of that total figure, about \$225 million was
                 spent on research. In the same year, the total amount
                 of all NSF [US National Science Foundations] grants for
                 computing costs, in all disciplines, was about \$10
                 million. Additionally, a large part of those grants was
                 never spent at campus computing centers. In the final
                 analysis then, in terms of affecting campus computing
                 center budgets, chemistry computing support from the
                 NSF was shown to be less than O.1\%.''",
  remark-03 =    "From page 51: ``The participants at the workshop had
                 initially concluded that the primary source of funding
                 for the proposed center should be the NSF, but when the
                 NSF Chemistry Advisory Committee expressed a lack of
                 interest in the NCCC [National Center for Computation
                 in Chemistry], a proposal was sent to the Atomic Energy
                 Commission. Unlike the NSF, the AEC [Atomic Energy
                 Commission], in the person of John Teem, the director
                 of the Division of Physical Research, was interested in
                 the project. After he decided to take on the project,
                 Teem said that he preferred the name ``National
                 Resource for Computation in Chemistry,'' because the
                 word ``center'' implied an actual building.''\,''",
  remark-04 =    "From page 54, quoting Peter Lykos: ``In the
                 competition for Society s resources, chemists
                 traditionally have not worked cooperatively to convince
                 Society of the need for committing a fair share of its
                 resources to support large-scale research in chemistry.
                 Chemists persist in behaving as though chemistry is a
                 cottage industry.'' \ldots{} As one observer put it,
                 ``The chemists formed a circle with their wagons and
                 pointed their guns inward!''\,''",
  remark-05 =    "From page 59--60, the last paragraph of the article
                 reports: Computational chemistry did not become ``big
                 science,'' but ``little science.'' It did not prosper
                 because of the creation of centralized research
                 institutes, but because of a decentralization of the
                 modes of production. Computational chemistry found a
                 way to survive and grow without large government
                 contracts. In sum, contrary to all the grand plans of
                 the 1970s, computational chemistry has remained, and
                 prospered as a result of being, a cottage industry.",
  remark-06 =    "From page 11: ``In the early 1960s, the Sanibel
                 conferences headed by Per-Olov L{\"o}wdin (University
                 of Florida and Uppsala University) expanded from
                 quantum chemistry and physics to include biological
                 applications.''",
}

@Article{Froman:2007:IQC,
  author =       "A. Fr{\"o}man and J. Linderberg",
  title =        "Inception of Quantum Chemistry at {Uppsala}",
  journal =      "Acta Universitatis Upsaliensis C, Organisation och
                 historia",
  volume =       "78",
  pages =        "1--46",
  year =         "2007",
  ISBN =         "91-554-6754-7",
  ISBN-13 =      "978-91-554-6754-8",
  ISSN =         "0502-7454",
  bibdate =      "Mon Jun 12 07:39:35 2017",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Grassi:2008:LCE,
  author =       "A. Grassi and G. M. Lombardo and G. G. N. Angilella
                 and G. Forte and N. H. March and C. {Van Alsenoy} and
                 R. Pucci",
  title =        "{L{\"o}wdin} correlation energy density of the
                 inhomogeneous electron liquid in some closed-shell
                 molecules at equilibrium geometry",
  journal =      j-PHYS-CHEM-LIQ,
  volume =       "46",
  number =       "5",
  pages =        "484--490",
  month =        "????",
  year =         "2008",
  CODEN =        "PCLQAC",
  DOI =          "https://doi.org/10.1080/00319100701790069",
  ISSN =         "0031-9104, 0031-9104, 1026-7727, 1029-0451",
  ISSN-L =       "0031-9104",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Physics and Chemistry of Liquids",
  journal-URL =  "http://www.tandfonline.com/loi/gpch20",
}

@Article{Mamedov:2008:CTC,
  author =       "B. A. Mamedov and H. Ko{\c{c}}",
  title =        "Calculation of two-center overlap integral in
                 molecular coordinate system over {Slater} type orbital
                 using {L{\"o}wdin} $ \alpha $-radial and {Guseinov}
                 rotation-angular functions",
  journal =      j-J-MATH-CHEM,
  volume =       "44",
  number =       "2",
  pages =        "365--372",
  month =        aug,
  year =         "2008",
  CODEN =        "JMCHEG",
  DOI =          "https://doi.org/10.1007/s10910-007-9313-z",
  ISSN =         "0259-9791 (print), 1572-8897 (electronic)",
  ISSN-L =       "0259-9791",
  bibdate =      "Thu Apr 9 18:14:12 MDT 2015",
  bibsource =    "http://link.springer.com/journal/10910/44/2;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathchem.bib",
  note =         "See corrigendum \cite{Mamedov:2009:CTCa}.",
  URL =          "http://link.springer.com/article/10.1007/s10910-007-9313-z",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Chemistry",
  journal-URL =  "http://link.springer.com/journal/10910",
  journalabr =   "J. Math. Chem.",
}

@Article{Rokob:2008:NSP,
  author =       "Andras T. Rokob and Agnes Szabados and Peter R.
                 Surjan",
  title =        "A Note on the Symmetry Properties of {L{\"o}wdin}'s
                 Orthogonalization Schemes",
  journal =      j-COLLECT-CZECH-CHEM-COMMUN,
  volume =       "73",
  number =       "6--7",
  pages =        "937--944",
  month =        "????",
  year =         "2008",
  CODEN =        "CCCCAK",
  DOI =          "https://doi.org/10.1135/cccc20080937",
  ISSN =         "0010-0765 (print), 1212-6950 (electronic)",
  ISSN-L =       "0010-0765",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Collection of Czechoslovak Chemical Communications",
  journal-URL =  "http://cccc.uochb.cas.cz/archive/",
}

@Article{Mamedov:2009:CTCa,
  author =       "B. A. Mamedov and H. Ko{\c{c}}",
  title =        "Calculation of two-center overlap integral in
                 molecular coordinate system over {Slater} type orbital
                 using {L{\"o}wdin} $ \alpha $-radial and {Guseinov}
                 rotation-angular functions [vol 44, pg 365, 2008]",
  journal =      j-J-MATH-CHEM,
  volume =       "45",
  number =       "3",
  pages =        "867--867",
  month =        mar,
  year =         "2009",
  CODEN =        "JMCHEG",
  DOI =          "https://doi.org/10.1007/s10910-008-9449-5",
  ISSN =         "0259-9791 (print), 1572-8897 (electronic)",
  ISSN-L =       "0259-9791",
  bibdate =      "Thu Apr 9 18:14:14 MDT 2015",
  bibsource =    "http://link.springer.com/journal/10910/45/3;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathchem.bib",
  note =         "See \cite{Mamedov:2008:CTC}.",
  URL =          "http://link.springer.com/article/10.1007/s10910-008-9449-5;
                 http://link.springer.com/content/pdf/10.1007/s10910-008-9449-5.pdf",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Chemistry",
  journal-URL =  "http://link.springer.com/journal/10910",
  journalabr =   "J. Math. Chem.",
}

@Article{Mamedov:2009:CTCb,
  author =       "B. A. Mamedov and E. Copuroglu",
  title =        "Calculation of two-center nuclear attraction integral
                 over {Slater} type orbital in molecular coordinate
                 system using {L{\"o}wdin} alpha-radial function and
                 {Guseinov} one-center charge density expansion
                 formulae",
  journal =      "Match --- Communications in Mathematical and in
                 Computer Chemistry",
  volume =       "61",
  number =       "2",
  pages =        "553--560",
  month =        "????",
  year =         "2009",
  ISSN =         "0340-6253",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Article{Park:2009:BAM,
  author =       "Buhm Soon Park",
  title =        "Between Accuracy and Manageability: Computational
                 Imperatives in Quantum Chemistry",
  journal =      j-HIST-STUD-NAT-SCI,
  volume =       "39",
  number =       "1",
  pages =        "32--62",
  month =        feb,
  year =         "2009",
  CODEN =        "????",
  DOI =          "https://doi.org/10.1525/hsns.2009.39.1.32",
  ISSN =         "1939-1811 (print), 1939-182X (electronic)",
  ISSN-L =       "1939-182X",
  bibdate =      "Tue Sep 28 15:08:45 MDT 2010",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/s/slater-john-clarke.bib;
                 https://www.math.utah.edu/pub/tex/bib/hsns.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Historical Studies in the Natural Sciences",
  journal-URL =  "http://www.jstor.org/journals/19391811.html",
  keywords =     "Albert S. Coolidge; Charles A. Coulson; Vladmir Fock;
                 Douglas Rayner Hartree: Walter Heitler; Egil A.
                 Hylleraas; Friedrich Hund; Hubert M. James; John Edward
                 Lennard-Jones; Fritz London; Per-Olov L{\"o}wdin;
                 Robert S. Mulliken; Linus Pauling; John Clarke Slater;
                 Slater determinant; Slater orbitals",
  remark-01 =    "From page 42: ``The further development of Heitler and
                 London's treatment of the hydrogen molecule went in two
                 directions. On the one hand, two Americans, John Slater
                 and Linus Pauling, applied Heitler and London's
                 interpretative scheme to polyatomic molecules,
                 explaining the directed property of valence with the
                 concept of hybridization and opening up a venue for
                 semi-empirical treatments for complex molecular
                 systems.''",
  remark-02 =    "From page 54: ``A more thorough review of Hartree's
                 papers came from John Slater. Like Gaunt, Slater
                 stressed that Hartree should have considered the
                 resonance interactions between electrons. In addition,
                 Slater pointed out, Hartree also neglected that
                 electron distributions were not really spherical.
                 \ldots{} later found an inconsistency in Hartree's
                 method of dealing with the core (inner-shell) electrons
                 and the valence electron: for the valence electron, he
                 solved the problem of the core electrons first and used
                 the central field determined from it, thus neglecting
                 the influence of the valence electron on the core
                 electrons.''",
  remark-03 =    "From page 56: ``Slater sent his paper on ``The Theory
                 of Complex Spectra'' to the \booktitle{Physical Review}
                 shortly before he took a trip to Europe in the summer
                 of 1929 as a Guggenheim Fellow. Everyone he met seemed
                 to know of his work, and most of them liked it. ``No
                 other work I have done,'' Slater wrote in his
                 autobiography, ``was so universally popular.'' The
                 paper was particularly welcomed by those physicists who
                 saw group theory as arcane, incomprehensible
                 mathematical manipulation; he later heard such remarks
                 as ``Slater had slain the `Gruppenpest' [the pest of
                 group theory].''\,''",
  remark-04 =    "From pages 57--58: ``A few months later, the Russian
                 physicist Vladmir Fock developed another way of
                 formulating the SCF method with the variational
                 principle. Unfamiliar with Slater's determinantal
                 method, Fock used the technique of the permutation
                 group --- hence, the Hartree--Fock (instead of the
                 Hartree--Slater--Fock) method. Finally, in 1935,
                 Hartree simplified Fock's formulation with Slater's
                 determinantal method.''",
  remark-05 =    "From page 60: ``Hartree's deep interest in improving
                 calculation techniques and easing human labor did not
                 earn him much respect among quantum physicists. Slater
                 found this unfair. He remarked: ``Douglas Hartree was
                 very distinctly of the matter-of-fact habit of thought
                 that I found most congenial. The hand-waving magical
                 type of scientist regarded him as a `mere computer.'
                 Yet he made a much greater contribution to our
                 knowledge of the behavior of real atoms than most of
                 them did.'' Slater went on to argue that Hartree's
                 contributions should be seen in a broader context:
                 ``While he limited himself to atoms, his demonstration
                 of the power of the self-consistent field for atoms is
                 what has led to the development of that method for
                 molecules and solids as well.''\,''",
  remark-06 =    "From page 62: ``Per-Olov L{\"o}wdin, a Swedish quantum
                 chemist, quipped in the 1950s: ``It is sometimes said
                 that a theoretician is a person who knows how to solve
                 a problem, but who cannot do it.''\,''",
}

@InCollection{Scerri:2009:LRA,
  author =       "Eric R. Scerri",
  title =        "{L{\"o}wdin}'s Remarks on the Aufbau Principle and a
                 Philosopher's View of Ab Initio Quantum Chemistry",
  crossref =     "Scerri:2009:SPP",
  pages =        "91--110",
  year =         "2009",
  DOI =          "https://doi.org/10.1142/9781848164260_0007",
  bibdate =      "Thu Nov 08 10:16:36 2012",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://www.worldscientific.com/worldscibooks/10.1142/p655",
  acknowledgement = ack-nhfb,
}

@Article{Linderberg:2010:SIP,
  author =       "Jan Linderberg",
  title =        "Scientific input by {Per-Olov L{\"o}wdin} to the
                 {Quantum Theory Project}",
  journal =      j-MOL-PHYS,
  volume =       "108",
  number =       "21--23",
  pages =        "2847--2851",
  month =        "????",
  year =         "2010",
  CODEN =        "MOPHAM",
  DOI =          "https://doi.org/10.1080/00268976.2010.489524",
  ISSN =         "0026-8976 (print), 1362-3028 (electronic)",
  ISSN-L =       "0026-8976",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  articleno =    "PII 926273126",
  fjournal =     "Molecular Physics",
  journal-URL =  "http://www.tandfonline.com/loi/tmph20",
}

@Article{Mamedov:2010:CTC,
  author =       "B. A. Mamedov and E. {\c{C}}opuro{\u{g}}lu",
  title =        "Calculation of three-center nuclear attraction
                 integral over {Slater} type orbitals in molecular
                 coordinate system using {L{\"o}wdin} $ \alpha $-radial
                 function and {Guseinov}'s two-center charge density
                 expansion formulae",
  journal =      j-J-MATH-CHEM,
  volume =       "47",
  number =       "1",
  pages =        "345--353",
  month =        jan,
  year =         "2010",
  CODEN =        "JMCHEG",
  DOI =          "https://doi.org/10.1007/s10910-009-9577-6",
  ISSN =         "0259-9791 (print), 1572-8897 (electronic)",
  ISSN-L =       "0259-9791",
  bibdate =      "Fri Apr 10 06:39:40 MDT 2015",
  bibsource =    "http://link.springer.com/journal/10910/47/1;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathchem.bib",
  note =         "See erratum \cite{Mamedov:2010:ECT}.",
  URL =          "http://link.springer.com/article/10.1007/s10910-009-9577-6",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Chemistry",
  journal-URL =  "http://link.springer.com/journal/10910",
  journalabr =   "J. Math. Chem.",
}

@Article{Mamedov:2010:ECT,
  author =       "B. A. Mamedov and E. {\c{C}}opuro{\u{g}}lu",
  title =        "Erratum: {Calculation of three-center nuclear
                 attraction integral over Slater type orbitals in
                 molecular coordinate system using {L{\"o}wdin} $ \alpha
                 $-radial function and Guseinov's two-center charge
                 density expansion formulae}",
  journal =      j-J-MATH-CHEM,
  volume =       "47",
  number =       "1",
  pages =        "354--354",
  month =        jan,
  year =         "2010",
  CODEN =        "JMCHEG",
  DOI =          "https://doi.org/10.1007/s10910-009-9601-x",
  ISSN =         "0259-9791 (print), 1572-8897 (electronic)",
  ISSN-L =       "0259-9791",
  bibdate =      "Fri Apr 10 06:39:40 MDT 2015",
  bibsource =    "http://link.springer.com/journal/10910/47/1;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathchem.bib",
  note =         "See \cite{Mamedov:2010:CTC}.",
  URL =          "http://link.springer.com/article/10.1007/s10910-009-9601-x;
                 http://link.springer.com/content/pdf/10.1007/s10910-009-9601-x.pdf",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Chemistry",
  journal-URL =  "http://link.springer.com/journal/10910",
}

@Article{Mayer:2010:LPT,
  author =       "I. Mayer",
  title =        "{L{\"o}wdin}'s pairing theorem and some of its
                 applications",
  journal =      j-MOL-PHYS,
  volume =       "108",
  number =       "21--23",
  pages =        "3273--3278",
  month =        "????",
  year =         "2010",
  CODEN =        "MOPHAM",
  DOI =          "https://doi.org/10.1080/00268976.2010.508473",
  ISSN =         "0026-8976 (print), 1362-3028 (electronic)",
  ISSN-L =       "0026-8976",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  articleno =    "PII 926886067",
  fjournal =     "Molecular Physics",
  journal-URL =  "http://www.tandfonline.com/loi/tmph20",
}

@Article{Mayhall:2010:OBQ,
  author =       "Nicholas J. Mayhall and Krishnan Raghavachari and
                 Hrant P. Hratchian",
  title =        "{ONIOM}-based {QM}:{QM} electronic embedding method
                 using {L{\"o}wdin} atomic charges: energies and
                 analytic gradients",
  journal =      j-J-CHEM-PHYS,
  volume =       "132",
  number =       "11",
  pages =        "114107--114107",
  day =          "21",
  month =        mar,
  year =         "2010",
  CODEN =        "JCPSA6",
  DOI =          "https://doi.org/10.1063/1.3315417",
  ISSN =         "1089-7690",
  ISSN-L =       "0021-9606",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Chemical Physics",
  journal-URL =  "http://scitation.aip.org/content/aip/journal/jcp/browse",
}

@Article{Fu:2011:ECM,
  author =       "Liang-Yu Fu and Guang-Zhong Wang and Bin-Guang Ma and
                 Hong-Yu Zhang",
  title =        "Exploring the common molecular basis for the universal
                 {DNA} mutation bias: Revival of {L{\"o}wdin} mutation
                 model",
  journal =      j-BIOCHEM-BIOPHYS-RES-COMMUN,
  volume =       "409",
  number =       "3",
  pages =        "367--371",
  day =          "10",
  month =        jun,
  year =         "2011",
  CODEN =        "BBRCA9",
  DOI =          "https://doi.org/10.1016/j.bbrc.2011.05.017",
  ISSN =         "0006-291x (print), 1090-2104 (electronic)",
  ISSN-L =       "0006-291X",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Biochemical and Biophysical Research Communications",
  journal-URL =  "http://www.sciencedirect.com/science/journal/0006291X",
}

@Article{Mamedov:2011:UBC,
  author =       "B. A. Mamedov and E. {\c{C}}opuro{\u{g}}lu",
  title =        "Use of binomial coefficients in fast and accurate
                 calculation of {L{\"o}wdin}-alpha radial functions",
  journal =      j-J-MATH-CHEM,
  volume =       "49",
  number =       "1",
  pages =        "201--207",
  month =        jan,
  year =         "2011",
  CODEN =        "JMCHEG",
  DOI =          "https://doi.org/10.1007/s10910-010-9735-x",
  ISSN =         "0259-9791 (print), 1572-8897 (electronic)",
  ISSN-L =       "0259-9791",
  bibdate =      "Thu Apr 9 18:14:18 MDT 2015",
  bibsource =    "http://link.springer.com/journal/10910/49/1;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathchem.bib",
  URL =          "http://link.springer.com/article/10.1007/s10910-010-9735-x",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Chemistry",
  journal-URL =  "http://link.springer.com/journal/10910",
  journalabr =   "J. Math. Chem.",
}

@Article{Mamedov:2011:UGO,
  author =       "B. A. Mamedov and E. Copuroglu",
  title =        "Use of {Guseinov}'s One-Center Expansion Formulae and
                 {L{\"o}wdin} alpha Radial Function in Calculation of
                 Two-Center Overlap Integrals over {Slater} Type
                 Orbitals with Noninteger Principal Quantum Numbers",
  journal =      j-ACTA-PHYS-POL-A,
  volume =       "119",
  number =       "3",
  pages =        "332--335",
  month =        mar,
  year =         "2011",
  CODEN =        "ATPLB6",
  ISSN =         "0587-4246 (print), 1898-794x (electronic)",
  ISSN-L =       "0587-4246",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Acta Physica Polonica A",
  journal-URL =  "http://przyrbwn.icm.edu.pl/APP/apphome.html",
}

@Article{Amovilli:2012:RBS,
  author =       "C. Amovilli and N. H. March",
  title =        "Relation between the {Slater--Kohn--Sham} orbitals
                 generated by the one-body potential V(r) of {DFT} and
                 the {L{\"o}wdin} natural orbitals for inhomogeneous
                 electron liquids",
  journal =      j-PHYS-CHEM-LIQ,
  volume =       "50",
  number =       "1",
  pages =        "121--127",
  month =        "????",
  year =         "2012",
  CODEN =        "PCLQAC",
  DOI =          "https://doi.org/10.1080/00319104.2011.555912",
  ISSN =         "0031-9104, 0031-9104, 1026-7727, 1029-0451",
  ISSN-L =       "0031-9104",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Physics and Chemistry of Liquids",
  journal-URL =  "http://www.tandfonline.com/loi/gpch20",
}

@Article{deAndrade:2012:PCP,
  author =       "Paulo Cesar Peres de Andrade",
  title =        "Probability current in protein electron transfer:
                 {L{\"o}wdin} population analysis",
  journal =      j-IJQC,
  volume =       "112",
  number =       "20",
  pages =        "3325--3332",
  day =          "15",
  month =        oct,
  year =         "2012",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.24197",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Thu Nov 8 09:09:46 MST 2012",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2010.bib;
                 http://www3.interscience.wiley.com/journalfinder.html",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "15 Jun 2012",
}

@Article{Mamedov:2012:CTC,
  author =       "Bahtiyar A. Mamedov and Ebru {\c{C}}opuro{\u{g}}lu",
  title =        "Calculation of two-center nuclear attraction integrals
                 of {Slater} type orbitals with noninteger principal
                 quantum numbers using {Guseinov}'s one-center expansion
                 formulas and {L{\"o}wdin}-$ \alpha $ radial function",
  journal =      j-APPL-MATH-COMP,
  volume =       "218",
  number =       "15",
  pages =        "7893--7897",
  day =          "1",
  month =        apr,
  year =         "2012",
  CODEN =        "AMHCBQ",
  DOI =          "https://doi.org/10.1016/j.amc.2012.01.069",
  ISSN =         "0096-3003 (print), 1873-5649 (electronic)",
  ISSN-L =       "0096-3003",
  bibdate =      "Wed Mar 14 15:18:36 MDT 2012",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/applmathcomput2010.bib;
                 http://www.sciencedirect.com/science/journal/00963003",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0096300312001208",
  acknowledgement = ack-nhfb,
  fjournal =     "Applied Mathematics and Computation",
  journal-URL =  "http://www.sciencedirect.com/science/journal/00963003",
}

@Article{Nagy:2012:MOR,
  author =       "P{\'e}ter R. Nagy and P{\'e}ter R. Surj{\'a}n and
                 {\'A}gnes Szabados",
  title =        "{Mayer}'s orthogonalization: relation to the
                 {Gram--Schmidt} and {L{\"o}wdin}'s symmetrical scheme",
  journal =      j-THEOR-CHEM-ACCOUNTS,
  volume =       "131",
  number =       "2",
  pages =        "1109",
  month =        feb,
  year =         "2012",
  CODEN =        "TCACFW",
  DOI =          "https://doi.org/10.1007/s00214-012-1109-y",
  ISSN =         "1432-881x (print), 1432-2234 (electronic)",
  ISSN-L =       "1432-2234",
  bibdate =      "Thu Nov 20 16:37:17 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  articleno =    "1109",
  fjournal =     "Theoretical Chemistry Accounts",
  journal-URL =  "http://link.springer.com/journal/214",
  pagecount =    "6",
  remark-1 =     "From page 2 (of 6): ``As proved below, Mayer's
                 orthogonalization is in fact equivalent to a two-step
                 combination of the Gram--Schmidt and L{\"o}wdin's
                 method. Since L{\"o}wdin [symmetric] orthogonalization
                 involves the construction of an inverse square root
                 matrix, it is remarkable that Mayer-orthogonalized
                 vectors can be expressed in a closed form. We show here
                 that due to the simple form of the overlap matrix
                 occurring in the L{\"o}wdin-orthogonalization step, its
                 inverse square root can be constructed
                 analytically.''",
  remark-2 =     "From page 4 (of 6): ``It is out of the scope of the
                 present study to compare Mayer's method with other
                 orthogonalization techniques in terms of scaling or
                 numerical behaviour.''",
}

@Article{Nagy:2012:SEE,
  author =       "I. Nagy and I. Aldazabal",
  title =        "Series expansions for an exact two-electron wave
                 function in terms of {L{\"o}wdin}'s renormalized
                 natural orbitals",
  journal =      j-PHYS-REV-A,
  volume =       "85",
  number =       "3",
  pages =        "034501:1--034501:4",
  day =          "5",
  month =        mar,
  year =         "2012",
  CODEN =        "PLRAAN",
  DOI =          "https://doi.org/10.1103/PhysRevA.85.034501",
  ISSN =         "1050-2947 (print), 1094-1622, 1538-4446, 1538-4519",
  ISSN-L =       "1050-2947",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  articleno =    "034501",
  fjournal =     "Physical Review A (Atomic, Molecular, and Optical
                 Physics)",
  journal-URL =  "http://pra.aps.org/browse",
}

@Article{PeresdeAndrade:2012:PCP,
  author =       "Paulo Cesar {Peres de Andrade}",
  title =        "Probability current in protein electron transfer:
                 {L{\"o}wdin} population analysis",
  journal =      j-IJQC,
  volume =       "112",
  number =       "20",
  pages =        "3325--3332",
  day =          "15",
  month =        oct,
  year =         "2012",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.24197",
  ISSN =         "0020-7608 (print), 1097-461x (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
}

@Article{Walk:2012:ALO,
  author =       "Philipp Walk and Peter Jung",
  title =        "Approximation of {L{\"o}wdin} orthogonalization to a
                 spectrally efficient orthogonal overlapping {PPM}
                 design for {UWB} impulse radio",
  journal =      j-SIG-PROC,
  volume =       "92",
  number =       "3",
  pages =        "649--666",
  month =        mar,
  year =         "2012",
  CODEN =        "SPRODR",
  DOI =          "https://doi.org/10.1016/j.sigpro.2011.09.006",
  ISSN =         "0165-1684 (print), 1872-7557 (electronic)",
  ISSN-L =       "0165-1684",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Signal Processing",
  journal-URL =  "http://www.sciencedirect.com/science/journal/01651684",
}

@Article{Szczepanik:2013:SAL,
  author =       "D. Szczepanik and J. Mrozek",
  title =        "On several alternatives for {L{\"o}wdin}
                 orthogonalization",
  journal =      j-COMPUT-THEOR-CHEM,
  volume =       "1008",
  number =       "??",
  pages =        "15--19",
  day =          "15",
  month =        mar,
  year =         "2013",
  CODEN =        "CTCOA5",
  DOI =          "https://doi.org/10.1016/j.comptc.2012.12.013",
  ISSN =         "2210-271X",
  bibdate =      "Mon Jun 10 15:22:38 MDT 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Computational \& Theoretical Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/journal/2210271X",
}

@Article{Brandas:2014:ESG,
  author =       "Erkki Br{\"a}ndas",
  title =        "Editorial: The statement of goals of the
                 {International Society for Theoretical Chemical
                 Physics}",
  journal =      j-IJQC,
  volume =       "114",
  number =       "15",
  pages =        "961--962",
  day =          "5",
  month =        aug,
  year =         "2014",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.24712",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed Aug 27 06:08:22 MDT 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2010.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "29 May 2014",
}

@Article{Flores-Moreno:2014:SNU,
  author =       "Roberto Flores-Moreno and Edwin Posada and F{\'e}lix
                 Moncada and Jonathan Romero and Jorge Charry and Manuel
                 D{\'\i}az-Tinoco and Sergio A. Gonz{\'a}lez and
                 N{\'e}stor F. Aguirre and Andr{\'e}s Reyes",
  title =        "Software News \& Updates: {LOWDIN}: the any particle
                 molecular orbital code",
  journal =      j-IJQC,
  volume =       "114",
  number =       "1",
  pages =        "50--56",
  day =          "5",
  month =        jan,
  year =         "2014",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.24500",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Feb 7 06:41:53 MST 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2010.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  keywords =     "Any Particle Molecular Orbital (APMO) method; APMO
                 method; exotic molecules; isotope effects; LOWDIN;
                 nuclear quantum effects; propagator method",
  onlinedate =   "1 Jul 2013",
}

@Article{Sidi:2014:AEB,
  author =       "A. Sidi and D. Pinchon and P. E. Hoggan",
  title =        "Asymptotic Expansions of
                 {Barnett--Coulson--L{\"o}wdin} Functions of High
                 Order",
  chapter =      "3",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "68",
  pages =        "43--76",
  year =         "2014",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/B978-0-12-800536-1.00003-4",
  ISBN =         "0-12-800536-X",
  ISBN-13 =      "978-0-12-800536-1",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Thu Jan 9 11:14:12 MST 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib",
  URL =          "http://www.sciencedirect.com/science/article/pii/B9780128005361000034",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  book-URL =     "http://www.sciencedirect.com/science/bookseries/00653276/",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276",
}

@Article{Simoes:2014:RPL,
  author =       "Ana Sim{\~o}es and Kostas Gavroglu",
  title =        "Reviews: {P.-O. L{\"o}wdin} and the {International
                 Journal of Quantum Chemistry}: a kaleidoscopic agenda
                 for quantum chemistry",
  journal =      j-IJQC,
  volume =       "114",
  number =       "2",
  pages =        "116--127",
  day =          "15",
  month =        jan,
  year =         "2014",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.24536",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Feb 7 06:41:59 MST 2014",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2010.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "2 Sep 2013",
}

@Article{Szabados:2014:LBF,
  author =       "{\'A}gnes Szabados and Zsuzsanna T{\'o}th",
  title =        "{L{\"o}wdin}'s bracketing function revisited",
  journal =      j-J-MATH-CHEM,
  volume =       "52",
  number =       "8",
  pages =        "2210--2221",
  month =        sep,
  year =         "2014",
  CODEN =        "JMCHEG",
  DOI =          "https://doi.org/10.1007/s10910-014-0379-0",
  ISSN =         "0259-9791 (print), 1572-8897 (electronic)",
  ISSN-L =       "0259-9791",
  bibdate =      "Thu Apr 9 18:14:30 MDT 2015",
  bibsource =    "http://link.springer.com/journal/10910/52/8;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jmathchem.bib",
  URL =          "http://link.springer.com/article/10.1007/s10910-014-0379-0",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Mathematical Chemistry",
  journal-URL =  "http://link.springer.com/journal/10910",
  journalabr =   "J. Math. Chem.",
}

@Article{Jiao:2015:ALC,
  author =       "Li Guang Jiao and Yew Kam Ho",
  title =        "Application of {L{\"o}wdin}'s canonical
                 orthogonalization method to the {Slater}-type orbital
                 configuration-interaction basis set",
  journal =      j-IJQC,
  volume =       "115",
  number =       "7",
  pages =        "434--441",
  day =          "5",
  month =        apr,
  year =         "2015",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.24867",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Fri Mar 6 16:23:07 MST 2015",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2010.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "24 Jan 2015",
}

@Article{Brandas:2017:POL,
  author =       "Erkki J. Br{\"a}ndas",
  title =        "{Per-Olov L{\"o}wdin} --- father of quantum
                 chemistry",
  journal =      j-MOL-PHYS,
  volume =       "115",
  number =       "??",
  pages =        "1--30",
  month =        mar,
  year =         "2017",
  CODEN =        "MOPHAM",
  DOI =          "https://doi.org/10.1080/00268976.2017.1294268",
  ISSN =         "0026-8976 (print), 1362-3028 (electronic)",
  ISSN-L =       "0026-8976",
  bibdate =      "Thu Jun 8 11:50:28 2017",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "https://www.researchgate.net/publication/315799822_Per-Olov_Lowdin_-_Father_of_Quantum_Chemistry",
  acknowledgement = ack-nhfb,
  fjournal =     "Molecular Physics",
  journal-URL =  "http://www.tandfonline.com/loi/tmph20",
  remark =       "TO DO: [08-Jun-2017] volume/number/pages not yet
                 assigned to journal issue.",
}

@Article{Bunge:2017:SSL,
  author =       "Carlos F. Bunge",
  title =        "Specifics on the Scientific Legacy of {Per-Olov
                 L{\"o}wdin}",
  chapter =      "4",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "74",
  pages =        "53--82",
  year =         "2017",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/bs.aiq.2016.04.004",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Mon Feb 13 15:41:40 MST 2017",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327616300338",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276/",
}

@Article{Linderberg:2017:POL,
  author =       "Jan Linderberg and Yngve {\"O}hrn and Erkki J.
                 Br{\"a}ndas and John R. Sabin",
  title =        "{Per-Olov L{\"o}wdin}",
  chapter =      "1",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "74",
  pages =        "1--7",
  year =         "2017",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/bs.aiq.2016.04.001",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Mon Feb 13 15:41:40 MST 2017",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327616300302",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276/",
}

@Article{Srivastava:2017:CLM,
  author =       "Vipin Srivastava and Suchitra Sampath",
  title =        "Cognition of Learning and Memory: What Have
                 {L{\"o}wdin's} Orthogonalizations Got to Do With
                 That?",
  chapter =      "14",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "74",
  pages =        "299--319",
  year =         "2017",
  CODEN =        "AQCHA9",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Mon Feb 13 15:41:40 MST 2017",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib",
  URL =          "http://www.sciencedirect.com/science/article/pii/S0065327616300430",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276/",
}

@Article{Hehenberger:2018:POL,
  author =       "Michael Hehenberger",
  title =        "{Per-Olov L{\"o}wdin}'s Impact on a {``Lost Son''}",
  chapter =      "1",
  journal =      j-ADV-QUANTUM-CHEM,
  volume =       "77",
  pages =        "1--18",
  year =         "2018",
  CODEN =        "AQCHA9",
  DOI =          "https://doi.org/10.1016/bs.aiq.2017.07.003",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  bibdate =      "Wed Apr 18 06:43:30 MDT 2018",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib",
  URL =          "https://www.sciencedirect.com/science/article/pii/S0065327617300680",
  acknowledgement = ack-nhfb,
  ajournal =     "Adv. Quantum Chem.",
  fjournal =     "Advances in Quantum Chemistry",
  journal-URL =  "http://www.sciencedirect.com/science/bookseries/00653276/",
}

@Article{Schwalbe:2018:FLO,
  author =       "Sebastian Schwalbe and Torsten Hahn and Simon Liebing
                 and Kai Trepte and Jens Kortus",
  title =        "{Fermi--L{\"o}wdin} orbital self-interaction corrected
                 density functional theory: {Ionization} potentials and
                 enthalpies of formation",
  journal =      j-J-COMPUT-CHEM,
  volume =       "39",
  number =       "29",
  pages =        "2463--2471",
  day =          "5",
  month =        nov,
  year =         "2018",
  CODEN =        "JCCHDD",
  DOI =          "https://doi.org/10.1002/jcc.25586",
  ISSN =         "0192-8651 (print), 1096-987X (electronic)",
  ISSN-L =       "0192-8651",
  bibdate =      "Mon Mar 25 09:39:47 MDT 2019",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/f/fermi-enrico.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jcomputchem2010.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Computational Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0192-8651",
  onlinedate =   "11 October 2018",
}

@Article{Trepte:2019:AAG,
  author =       "Kai Trepte and Sebastian Schwalbe and Torsten Hahn and
                 Jens Kortus and Der-You Kao and Yoh Yamamoto and Tunna
                 Baruah and Rajendra R. Zope and Kushantha P. K.
                 Withanage and Juan E. Peralta and Koblar A. Jackson",
  title =        "Analytic atomic gradients in the {Fermi--L{\"o}wdin}
                 orbital self-interaction correction",
  journal =      j-J-COMPUT-CHEM,
  volume =       "40",
  number =       "6",
  pages =        "820--825",
  day =          "5",
  month =        mar,
  year =         "2019",
  CODEN =        "JCCHDD",
  DOI =          "https://doi.org/10.1002/jcc.25767",
  ISSN =         "0192-8651 (print), 1096-987X (electronic)",
  ISSN-L =       "0192-8651",
  bibdate =      "Mon Mar 25 09:39:52 MDT 2019",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/f/fermi-enrico.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jcomputchem2010.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Computational Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0192-8651",
  onlinedate =   "27 December 2018",
}

@Article{PonsViver:2019:PIL,
  author =       "Miquel {Pons Viver}",
  title =        "The practical implementation of {L{\"o}wdin}'s method
                 for spin projection",
  journal =      j-IJQC,
  volume =       "119",
  number =       "4",
  pages =        "e25770:1--e25770:??",
  day =          "15",
  month =        feb,
  year =         "2019",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.25770",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Mar 25 11:03:11 MDT 2019",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2010.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2020.bib",
  note =         "See \cite{Yoshizawa:2020:MDP}.",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "19 November 2018",
}

@Article{Aquino:2020:FON,
  author =       "Fredy W. Aquino and Ravindra Shinde and Bryan M.
                 Wong",
  title =        "Fractional occupation numbers and self-interaction
                 correction-scaling methods with the {Fermi--L{\"o}wdin}
                 orbital self-interaction correction approach",
  journal =      j-J-COMPUT-CHEM,
  volume =       "41",
  number =       "12",
  pages =        "1200--1208",
  day =          "5",
  month =        may,
  year =         "2020",
  CODEN =        "JCCHDD",
  DOI =          "https://doi.org/10.1002/jcc.26168",
  ISSN =         "0192-8651 (print), 1096-987X (electronic)",
  ISSN-L =       "0192-8651",
  bibdate =      "Wed Jun 3 11:00:56 MDT 2020",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/jcomputchem2010.bib",
  acknowledgement = ack-nhfb,
  fjournal =     "Journal of Computational Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0192-8651",
  onlinedate =   "11 February 2020",
}

@Article{Yoshizawa:2020:MDP,
  author =       "Terutaka Yoshizawa",
  title =        "A mathematical discussion of {Pons Viver}'s
                 implementation of {L{\"o}wdin}'s spin projection
                 operator",
  journal =      j-IJQC,
  volume =       "120",
  number =       "12",
  pages =        "e26215:1--e26215:??",
  day =          "15",
  month =        jun,
  year =         "2020",
  CODEN =        "IJQCB2",
  DOI =          "https://doi.org/10.1002/qua.26215",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Wed May 27 18:07:40 MDT 2020",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2010.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc2020.bib",
  note =         "See \cite{PonsViver:2019:PIL}.",
  acknowledgement = ack-nhfb,
  fjournal =     "International Journal of Quantum Chemistry",
  journal-URL =  "http://www.interscience.wiley.com/jpages/0020-7608/",
  onlinedate =   "09 April 2020",
}

%%% =====================================================================
%%% Cross-referenced and proceedings entries must come last:
%%%
%%% Missing: ser-IJQC-QBS: 23(1996), 24(1997), 25(1998), 26(1999), 27(2000)
%%%          ser-IJQC-QCS: 32(1998), 33(1998)
%%%
%%% Were proceedings published for the Sanibel meetings of 1961 -- 1966??
%%%
%%% Did the 1985 symposia proceedings actually not appear until 1986, so that
%%% there were four proceedings issues (two each of ser-IJQC-QBS and
%%% ser-IJQC-QCS) in that year??
%%%
%%% Starting in 1967, the symposia proceedings were published in a
%%% special series, bound with a heavier cover than the International
%%% Journal of Quantum Chemistry, and in a different color (white).  In
%%% 1974, that series was split in two separately-numbered parts, one for
%%% quantum chemistry, and the other for quantum biology.  The quantum
%%% chemistry series continued the numbering of earlier volumes.  This
%%% practice appears to have been discontinued from 1996, when the
%%% proceedings became regular issues of the International Journal of
%%% Quantum Chemistry.  Their title pages still contain the symposium
%%% number, however, and thus, bibliography entries for 1996--date below
%%% contain a note field listing that number.
%%%
%%%    ---------       -----------     ---------------------------------------------   --------
%%%    Conference      Proceedings     Location                                        Honorees
%%%    ---------       -----------     ---------------------------------------------   --------
%%%    Sanibel 1       ??              Sanibel Island, Florida, 1961
%%%
%%%    Sanibel 2       ??              Sanibel Island, Florida, 1962
%%%
%%%    Sanibel 3       ??              Sanibel Island, Florida, 1963                   Egil A. Hylleraas
%%%                                    (published in Reviews of Modern Physics,
%%%                                    v35 n3 July 1963)
%%%
%%%    Sanibel 4       ??              Sanibel Island, Florida, 1964
%%%
%%%    Sanibel 5       ??              Sanibel Island, Florida, 1965                   Robert S. Mulliken
%%%
%%%    Sanibel 6       ??              Sanibel Island, Florida, 1966
%%%
%%%    Sanibel 7       SYMP 1          Sanibel Island, Florida, January 16--20, 1967   John Clarke Slater
%%%
%%%    Sanibel 8       SYMP 2          Sanibel Island, Florida, January 15--20, 1968
%%%
%%%    Sanibel 9       SYMP 3          Sanibel Island, Florida, January 13--18, 1969   Henry Eyring
%%%
%%%    Sanibel 10      SYMP 4          Sanibel Island, Florida, January 19--24, 1970
%%%
%%%    Sanibel 11      SYMP 5          Sanibel Island, Florida, January 18--23, 1971   John H. Van Vleck
%%%
%%%    Sanibel 12      SYMP 6          Sanibel Island, Florida, January 17--22, 1972
%%%
%%%    Sanibel 13      SYMP 7          Sanibel Island, Florida, January 21--27, 1973   Edward U. Condon
%%%
%%%    Sanibel 14      QCS 8           Sanibel Island, Florida, January 20--26, 1974
%%%    Sanibel 14      QBS 1           Sanibel Island, Florida, January 17--19, 1974
%%%
%%%    Sanibel 15      QCS 9           Sanibel Island, Florida, January 16--18, 1975   L. H. Thomas
%%%    Sanibel 15      QBS 2           Sanibel Island, Florida, January 19--25, 1975
%%%
%%%    Sanibel 16      QCS 10          Sanibel Island, Florida, January 12--14, 1976
%%%    Sanibel 16      QBS 3           Sanibel Island, Florida, January 19--24, 1976   Albert Szent-Gyorgyi
%%%
%%%    Sanibel 17      QCS 11          Sanibel Island, Florida, January 9--12, 1977    Linus Pauling
%%%    Sanibel 17      QBS 4           Sanibel Island, Florida, January 16--22, 1977
%%%
%%%    Sanibel 18      QCS 12          Flagler Beach, Florida, March 3--11, 1978
%%%    Sanibel 18      QBS 5           Flagler Beach, Florida, March 12--18, 1978
%%%
%%%    Sanibel 19      QCS 13          Flagler Beach, Florida, March 4--10, 1979       Albert Einstein's 100th Anniversary
%%%    Sanibel 19      QBS 6           Flagler Beach, Florida, March 11--17, 1979      Alberte and Bernard Pullman
%%%
%%%    Sanibel 20      QCS 14          Palm Coast, Florida, March 5--8, 1980           E. Bright Wilson
%%%    Sanibel 20      QBS 7           Flagler Beach, Florida, March 10--20, 1980
%%%
%%%    Sanibel 21      QCS 15          Palm Coast, Florida, March 5--7, 1981
%%%    Sanibel 21      QBS 8           Flagler Beach, Florida, March 8--14, 1981
%%%
%%%    Sanibel 22      QCS 16          Flagler Beach, Florida, March 1--3 and 7--13, 1982   J. E. Mayer
%%%    Sanibel 22      QBS 9           Palm Coast, Florida, March 4--6, 1982
%%%
%%%    Sanibel 23      QCS 17          Flagler Beach, Florida, March 3--12, 1983       Sir David Bates
%%%    Sanibel 23      QBS 10          Palm Coast, Florida, March 14--16, 1983
%%%
%%%    Sanibel 24      QCS 18          Flagler Beach, Florida, March 1--15, 1984       Masao Kotani
%%%    Sanibel 25      QBS 11          Palm Coast, Florida, March 12--15, 1984
%%%
%%%    Sanibel 25      QCS 19          Marineland, Florida, March 14--16, 1985
%%%    Sanibel 25      QBS 12          Marineland, Florida, March 18--23, 1985
%%%
%%%    Sanibel 26      QCS 20          Marineland, Florida, March 6--8, 1986
%%%    Sanibel 26      QBS 13          Marineland, Florida, March 10--15, 1986
%%%
%%%    Sanibel 27      QBS 14          Marineland, Florida, March 12--14, 1987
%%%    Sanibel 27      QCS 21          Marineland, Florida, March 12--21, 1987
%%%
%%%    Sanibel 28      QBS 15          University of Florida Whitney Marine Laboratory at Marineland, Florida, March 12--19, 1988
%%%    Sanibel 28      QCS 22          University of Florida Whitney Marine Laboratory at Marineland, Florida, March 12--19, 1988
%%%
%%%    Sanibel 29      QBS 16          St. Augustine, Florida, April 1--8, 1989
%%%    Sanibel 29      QCS 23          St. Augustine, Florida, April 1--8, 1989
%%%
%%%    Sanibel 30      QBS 17          Ponce de Leon Conference Center, St. Augustine, Florida, March 17--24, 1990
%%%    Sanibel 30      QCS 24          Ponce de Leon Conference Center, St. Augustine, Florida, March 17--24, 1990
%%%
%%%    Sanibel 31      QBS 18          Ponce de Leon Conference Center, St. Augustine, Florida, March 9--16, 1991
%%%    Sanibel 31      QCS 25          Ponce de Leon Conference Center, St. Augustine, Florida, March 9--16, 1991
%%%
%%%    Sanibel 32      QBS 19          Ponce de Leon Conference Center, St. Augustine, Florida, March 14--21, 1992
%%%    Sanibel 32      QCS 26          Ponce de Leon Conference Center, St. Augustine, Florida, March 14--21, 1992
%%%
%%%    Sanibel 33      QBS 20          St. Augustine, Florida, March 13--20, 1993
%%%    Sanibel 33      QCS 27          St. Augustine, Florida, March 13--20, 1993
%%%
%%%    Sanibel 34      QBS 21          Marriott at Sawgrass Resort, Ponte Vedra Beach, Florida, February 12--19, 1994
%%%    Sanibel 34      QCS 28          Ponte Vedra Beach, Florida, February 12--19, 1994
%%%
%%%    Sanibel 35      QBS 22          Ponce de Leon Resort, St. Augustine, Florida, February 25--March 4, 1995
%%%    Sanibel 35      QCS 29          Ponce de Leon Resort, St. Augustine, Florida, February 25--March 4, 1995
%%%
%%%    Sanibel 36      QBS 23          Ponce de Leon Resort, St. Augustine, Florida, February 24--March 2, 1996
%%%                    IJQC 60(7)
%%%                    QCS 30          Ponce de Leon Resort, St. Augustine, Florida, February 24--March 2, 1996
%%%                    IJQC 60(8)
%%%
%%%    Sanibel 37      QBS 24          Ponce de Leon Resort, St. Augustine, Florida, March 1--March 7, 1997
%%%                    IJQC 65(6)
%%%                    QCS 31          Ponce de Leon Resort, St. Augustine, Florida, March 1--March 7, 1997
%%%                    IJQC 65(5)
%%%
%%%    Sanibel 38      QBS 25          Ponce de Leon Resort, St. Augustine, Florida, February 21--27, 1998
%%%                    IJQC 70(6)
%%%                    QCS 32          Ponce de Leon Resort, St. Augustine, Florida, February 21--27, 1998
%%%                    IJQC 70(4/5)
%%%
%%%    Sanibel 39      QBS 26          Ponce de Leon Resort, St. Augustine, Florida, February 27--March 5, 1999
%%%                    IJQC 75(6)
%%%                    QCS 33          Ponce de Leon Resort, St. Augustine, Florida, February 27--March 5, 1999
%%%                    IJQC 75(4/5)
%%%
%%%    Sanibel 40      QBS 27          Ponce de Leon Resort, St. Augustine, Florida, February 25--March 3, 2000
%%%                    IJQC 80(6)      <== check ??
%%%                    QCS 34          Ponce de Leon Resort, St. Augustine, Florida, February 25--March 3, 2000
%%%                    IJQC 80(4/5)
%%%

@Proceedings{Froman:1958:CBC,
  editor =       "Anders Fr{\"o}man and George Hall",
  booktitle =    "Acta Valadalensia",
  title =        "Correspondence between Concepts in Chemistry and
                 Quantum Chemistry: Proceedings of a Panel Meeting Held
                 at {V{\aa}l{\aa}dalen, Sweden, August 26--30, 1958,
                 \ldots{}, Part 1}",
  publisher =    "Uppsala University",
  address =      "Uppsala, Sweden",
  pages =        "1--67",
  year =         "1958",
  bibdate =      "Mon Jun 12 08:01:57 2017",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Proceedings of a panel meeting held at
                 V{\aa}l{\aa}dalen, Sweden, 1958.",
  series =       "Acta V{\aa}l{\aa}dalensia",
  acknowledgement = ack-nhfb,
  remark =       "Issue 16 of Technical note.",
}

@Proceedings{Lowdin:1963:ISAa,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "International Symposium on Atomic and Molecular
                 Quantum Mechanics: Proceedings in Honor of Professor
                 Egil A. Hylleraas and arranged by the University of
                 Florida at Sanibel Island, 14--19 January 1963",
  title =        "International Symposium on Atomic and Molecular
                 Quantum Mechanics: Proceedings in Honor of Professor
                 Egil {A}. Hylleraas and arranged by the University of
                 Florida at Sanibel Island, 14--19 January 1963",
  volume =       "35(3)",
  publisher =    pub-AIP,
  address =      pub-AIP:adr,
  pages =        "??--??",
  month =        jul,
  year =         "1963",
  CODEN =        "RMPHAT",
  ISSN =         "0034-6861 (print), 1538-4527 (electronic), 1539-0756",
  bibdate =      "Fri Dec 15 19:29:32 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  series =       j-REV-MOD-PHYS,
  acknowledgement = ack-nhfb,
}

@Proceedings{Lowdin:1965:PISa,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Atomic
                 and Molecular Orbital Quantum Theory, Dedicated to
                 Professor Robert Sanderson Mulliken, Sanibel Island,
                 Florida, 18--23 January 1965",
  title =        "Proceedings of the International Symposium on Atomic
                 and Molecular Orbital Quantum Theory, Dedicated to
                 Professor Robert Sanderson Mulliken, Sanibel Island,
                 Florida, 18--23 January 1965",
  volume =       "43 (10 part 2)",
  publisher =    pub-AIP,
  address =      pub-AIP:adr,
  pages =        "S1--S272",
  day =          "15",
  month =        nov,
  year =         "1965",
  CODEN =        "JCPSA6",
  ISSN =         "0021-9606 (print), 1089-7690 (electronic)",
  bibdate =      "Fri Dec 15 18:38:27 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  series =       j-J-CHEM-PHYS,
  acknowledgement = ack-nhfb,
}

@Proceedings{Lowdin:1967:PIS,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory, held in honor of
                 John Clarke Slater at Sanibel Island, Florida, January
                 16--20, 1967",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory, held in honor of
                 John Clarke Slater at Sanibel Island, Florida, January
                 16--20, 1967",
  volume =       "1",
  publisher =    pub-INTERSCIENCE,
  address =      pub-INTERSCIENCE:adr,
  pages =        "xviii + 854",
  year =         "1967",
  LCCN =         "QD 462 A1 I58 1967",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-SYMP,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1968:PIS,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory and Quantum Biology,
                 held at Sanibel Island, Florida, January 15--20, 1968",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory and Quantum Biology,
                 held at Sanibel Island, Florida, January 15--20, 1968",
  volume =       "2",
  publisher =    pub-INTERSCIENCE,
  address =      pub-INTERSCIENCE:adr,
  pages =        "x + 381",
  year =         "1968",
  LCCN =         "QD453.A1 I58 S95, 1968",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-SYMP,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Book{Midtdal:1968:SSPa,
  editor =       "John Midtdal and Knut Thalberg and Harald Wergeland",
  booktitle =    "Selected Scientific Papers of {Egil A. Hylleraas}",
  title =        "Selected Scientific Papers of {Egil A. Hylleraas}",
  volume =       "1",
  publisher =    "NTH-Trykk",
  address =      "Trondheim, Norway",
  pages =        "viii + 445",
  year =         "1968",
  LCCN =         "Q143.H98 A25 1968",
  bibdate =      "Sat Jul 25 13:55:27 1998",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/ijqc1960.bib",
  acknowledgement = ack-nhfb,
  xxISBN =       "none",
}

@Proceedings{Lowdin:1969:PIS,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory and Quantum Biology:
                 held in honor of Henry Eyring at Sanibel Island,
                 Florida, January 13--18, 1969",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory and Quantum Biology:
                 held in honor of Henry Eyring at Sanibel Island,
                 Florida, January 13--18, 1969",
  volume =       "3",
  publisher =    pub-INTERSCIENCE,
  address =      pub-INTERSCIENCE:adr,
  pages =        "????",
  year =         "1969",
  LCCN =         "QD453.A1I62 no.3",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-SYMP,
  acknowledgement = ack-nhfb,
  keywords =     "Eyring, Henry, 1901; molecular biology -- congresses;
                 quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1971:PISa,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory and Quantum Biology:
                 Held at Sanibel Island, Florida, January 19--24, 1970",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory and Quantum Biology:
                 Held at Sanibel Island, Florida, January 19--24, 1970",
  volume =       "4",
  publisher =    pub-INTERSCIENCE,
  address =      pub-INTERSCIENCE:adr,
  pages =        "xvii + 484",
  year =         "1971",
  LCCN =         "W1 IN790P no.4 1970",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-SYMP,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1971:PISb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular Solid-State Theory and Quantum Biology: held
                 in honor of {John H. Van Vleck} at Sanibel Island,
                 Florida, January 18--23, 1971",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular Solid-State Theory and Quantum Biology: held
                 in honor of {John H. Van Vleck} at Sanibel Island,
                 Florida, January 18--23, 1971",
  volume =       "5",
  publisher =    pub-INTERSCIENCE,
  address =      pub-INTERSCIENCE:adr,
  pages =        "xxiv + 782",
  year =         "1971",
  LCCN =         "QD453.A1I62 no.5",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 LOCATORplus database; OCLC WorldCat database;
                 University of California MELVYL catalog",
  series =       ser-IJQC-SYMP,
  acknowledgement = ack-nhfb,
  keywords =     "molecular biology -- congresses; quantum chemistry --
                 congresses",
  xxpages =      "xxxiv + 782",
}

@Proceedings{Herman:1972:CSS,
  editor =       "Frank Herman and Norris W. Dalton and Thomas R.
                 Koehler",
  booktitle =    "{Computational Solid State Physics: Proceedings of an
                 International Symposium Held October 6--8, 1971, in
                 Wildbad, Germany}",
  title =        "{Computational Solid State Physics: Proceedings of an
                 International Symposium Held October 6--8, 1971, in
                 Wildbad, Germany}",
  publisher =    pub-SV,
  address =      pub-SV:adr,
  bookpages =    "xiv + 450",
  pages =        "xiv + 450",
  year =         "1972",
  DOI =          "https://doi.org/10.1007/978-1-4684-1977-1",
  ISBN =         "0-306-30583-6, 1-4684-1979-X (print), 1-4684-1977-3
                 (e-book)",
  ISBN-13 =      "978-0-306-30583-2, 978-1-4684-1979-5 (print),
                 978-1-4684-1977-1 (e-book)",
  LCCN =         "QC176-176.9",
  bibdate =      "Mon Mar 24 11:13:06 2014",
  bibsource =    "fsz3950.oclc.org:210/WorldCat;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/m/march-norman-h.bib",
  series =       "The IBM Research Symposia Series",
  URL =          "http://link.springer.com/book/10.1007/978-1-4684-1977-1",
  acknowledgement = ack-nhfb,
  series-URL =   "http://link.springer.com/bookseries/10380",
  tableofcontents = "1. Experimental Studies of the Electronic Structure
                 of Crystals \\
                 Introductory Remarks \\
                 Spatial Dispersion Induced Birefringence in Cubic
                 Semiconductors \\
                 Photoemission Studies of the Electronic Structure of
                 Solids \\
                 Investigation of Inner Shell Excitations in Solids by
                 Synchrotron Radiation \\
                 Positron Annihilation Experiments and the Band
                 Structure of V3Si \\
                 2. Theoretical Studies of the Electronic Structure of
                 Crystals \\
                 Introductory Remarks \\
                 Empirical Band Calculations \\
                 On the Theory of Metallic Lithium \\
                 Generalizations of the Relativistic OPW Method
                 Including Overlapping and Non-Overlapping Atomic
                 Orbitals \\
                 MAPW-Calculations with Screened Exchange Application to
                 Copper \\
                 Some Remarks on Current RAPW Calculations for Silver,
                 Molybdenum, and Vanadium \\
                 Recent KKR Band Calculations \\
                 The Atomic Arrangements and Radial Distribution
                 Functions of Amorphous Silicon and Germanium \\
                 Optical Properties of Polytypes of Germanium \\
                 Charge Density in the Gallium Arsenide Crystal \\
                 3. Treatment of Exchange and Correlation Effects in
                 Crystals \\
                 Introductory Remarks \\
                 Effects of Electron Correlation with Particular
                 Reference to Charge and Momentum Densities in Crystals
                 \\
                 Local Exchange-Correlation Potentials \\
                 Exchange-Correlation Potentials \\
                 An Improved Statistical Exchange Approximation \\
                 Cohesive Energy of the Lithium Metal by the AMO Method
                 \\
                 4. Solid State Astrophysics \\
                 Introductory Remarks \\
                 Observational Evidence for Solid State Phenomena in
                 Pulsars \\
                 Neutron Stars and White Dwarfs \\
                 5. Lattice Dynamics \\
                 Introductory Remarks \\
                 Note on the Rennes Conference on Phonons \\
                 Neutron and X-Ray Inelastic Scattering by Lattice
                 Vibrations \\
                 Phonon Dispersion Relations \\
                 Microscopic Theory of Phonons in Solids \\
                 Computational Aspects of Anharmonic Lattice Dynamics
                 \\
                 Anharmonic Lattice Dynamics: Renormalized Theory \\
                 6. Localized Imperfections and Dislocations \\
                 Introductory Remarks \\
                 Localized Vibrational Modes in Crystals \\
                 Point Defects in Ionic Crystals \\
                 Computer Simulation of Point and Line Defects in Iron
                 and Copper \\
                 Dislocations in Anisotropic Media \\
                 List of Contributors",
}

@Proceedings{Lowdin:1972:PIS,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory and Quantum Biology:
                 Held at Sanibel Island, Florida, January 17--22, 1972",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory and Quantum Biology:
                 Held at Sanibel Island, Florida, January 17--22, 1972",
  volume =       "6",
  publisher =    pub-INTERSCIENCE,
  address =      pub-INTERSCIENCE:adr,
  pages =        "xxi + 465",
  year =         "1972",
  LCCN =         "QD453.A1I62 no.6",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-SYMP,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
  xxISBN =       "none",
}

@Proceedings{Lowdin:1973:PIS,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular and Solid-State Theory and Quantum Biology:
                 Held at Sanibel Island, Florida, January 21--27, 1973",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular and Solid-State Theory and Quantum Biology:
                 Held at Sanibel Island, Florida, January 21--27, 1973",
  volume =       "7",
  publisher =    pub-INTERSCIENCE,
  address =      pub-INTERSCIENCE:adr,
  pages =        "xxviii + 664",
  year =         "1973",
  LCCN =         "QD453.A1I62 no.7",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-SYMP,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
  xxISBN =       "none",
}

@Proceedings{Lowdin:1974:PISa,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular and Solid-State Theory and Quantum
                 Statistics, held at Sanibel Island, Florida, January
                 20--26, 1974",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular and Solid-State Theory and Quantum
                 Statistics, held at Sanibel Island, Florida, January
                 20--26, 1974",
  volume =       "8",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xxi + 517",
  year =         "1974",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  LCCN =         "QD453.A1I62 no.8",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "molecular biology -- congresses; pharmacology --
                 congresses; quantum biochemistry -- congresses; quantum
                 chemistry -- congresses",
  xxISBN =       "none",
}

@Proceedings{Lowdin:1974:PISb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology, held at Sanibel
                 Island, Florida, January 17--19, 1974",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology, held at Sanibel
                 Island, Florida, January 17--19, 1974",
  volume =       "1",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xiv + 316",
  year =         "1974",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  LCCN =         "QH 345 I61p 1974",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "molecular biology -- congresses; pharmacology --
                 congresses; quantum biochemistry -- congresses; quantum
                 chemistry -- congresses",
  xxISBN =       "none",
}

@Proceedings{Lowdin:1975:PISa,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory and Quantum
                 Statistics, held at Sanibel Island, Florida, January
                 19--25, 1975",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory and Quantum
                 Statistics, held at Sanibel Island, Florida, January
                 19--25, 1975",
  volume =       "9",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xxv + 583",
  year =         "1975",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1975",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "chemistry, physical and theoretical -- congresses;
                 quantum chemistry -- congresses; Thomas, Llewellyn
                 Hilleth, 1903",
  xxISBN =       "none",
}

@Proceedings{Lowdin:1975:PISb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology, held at Sanibel
                 Island, Florida, January 16--18, 1975",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology, held at Sanibel
                 Island, Florida, January 16--18, 1975",
  volume =       "2",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xiv + 348",
  year =         "1975",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  LCCN =         "QH 345 I609 1975",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "molecular biology -- congresses; pharmacology --
                 congresses; quantum biochemistry -- congresses",
  xxISBN =       "none",
}

@Book{Mehra:1975:SCP,
  editor =       "Jagdish Mehra",
  booktitle =    "{The Solvay conferences on physics: aspects of the
                 development of physics since 1911}",
  title =        "{The Solvay conferences on physics: aspects of the
                 development of physics since 1911}",
  publisher =    pub-REIDEL,
  address =      pub-REIDEL:adr,
  pages =        "xxxii + 415",
  year =         "1975",
  ISBN =         "90-277-0635-2",
  ISBN-13 =      "978-90-277-0635-5",
  LCCN =         "QC1.S792 M43",
  bibdate =      "Sat Aug 20 14:49:53 MDT 2011",
  bibsource =    "fsz3950.oclc.org:210/WorldCat;
                 https://www.math.utah.edu/pub/bibnet/authors/b/bohr-niels.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/b/born-max.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/d/dirac-p-a-m.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/f/fermi-enrico.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/g/gamow-george.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/h/heisenberg-werner.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/o/oppenheimer-j-robert.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/p/pauli-wolfgang.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/s/schroedinger-erwin.bib;
                 https://www.math.utah.edu/pub/tex/bib/einstein.bib",
  acknowledgement = ack-nhfb,
  subject =      "F{\'\i}sica nuclear",
}

@Book{Calais:1976:QSM,
  author =       "Jean-Louis Calais and Osvaldo Goscinski and Jan
                 Linderberg and Yngve {\"O}hrn",
  booktitle =    "Quantum science: methods and structure: a tribute to
                 {Per-Olov L{\"o}wdin}",
  title =        "Quantum science: methods and structure: a tribute to
                 {Per-Olov L{\"o}wdin}",
  publisher =    pub-PLENUM,
  address =      pub-PLENUM:adr,
  pages =        "ix + 595",
  year =         "1976",
  DOI =          "https://doi.org/10.1007/978-1-4757-1659-7",
  ISBN =         "0-306-30968-8, 1-4757-1661-3 (print), 1-4757-1659-1
                 (online)",
  ISBN-13 =      "978-0-306-30968-7, 978-1-4757-1661-0 (print),
                 978-1-4757-1659-7 (online)",
  LCCN =         "QC174.125 .Q371",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/s/slater-john-clarke.bib;
                 University of California MELVYL catalog",
  URL =          "http://www.springerlink.com/content/978-1-4757-1659-7",
  acknowledgement = ack-nhfb,
  keywords =     "L{\"o}wdin, Per Olov, 1916; quantum theory; quantum
                 chemistry",
}

@Proceedings{Lowdin:1976:PISa,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory and Quantum
                 Statistics: held at Sanibel Island, Florida, January
                 19--24, 1976",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory and Quantum
                 Statistics: held at Sanibel Island, Florida, January
                 19--24, 1976",
  volume =       "10",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xiv + 438",
  year =         "1976",
  CODEN =        "IJQBDZ",
  ISBN =         "????",
  ISBN-13 =      "????",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1976",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1976:PISb,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology, held at Sanibel
                 Island, Florida, January 12--14, 1976",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology, held at Sanibel
                 Island, Florida, January 12--14, 1976",
  volume =       "3",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xiii + 251",
  year =         "1976",
  CODEN =        "IJQBDZ",
  ISBN =         "????",
  ISBN-13 =      "????",
  ISSN =         "0360-8832",
  LCCN =         "QH 345 I609 1976",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "molecular biology -- congresses; pharmacology --
                 congresses; quantum biochemistry -- congresses",
}

@Proceedings{Lowdin:1977:PISa,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory, Collision Phenomena,
                 and Computational Methods, held at Sanibel Island,
                 Florida, January 16--22, 1977",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory, Collision Phenomena,
                 and Computational Methods, held at Sanibel Island,
                 Florida, January 16--22, 1977",
  volume =       "11",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xvi + 654",
  year =         "1977",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1977",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
  xxISBN =       "none",
}

@Proceedings{Lowdin:1977:PISb,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology, held at Sanibel
                 Island, Florida, January 9--12, 1977",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology, held at Sanibel
                 Island, Florida, January 9--12, 1977",
  volume =       "4",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xi + 473",
  year =         "1977",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  LCCN =         "QH 345 I609 1977; QH345.I53 1977",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "molecular biology -- congresses; pharmacology --
                 congresses; quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
  xxISBN =       "none",
}

@Proceedings{Lowdin:1978:CPS,
  editor =       "Per-Olov L{\"o}wdin and Osvaldo Goscinski and
                 Jean-Louis Calais",
  booktitle =    "Chemical physics of surfaces, catalysis and membranes:
                 proceedings of a colloquium held 28--31 August 1977 at
                 the University of Uppsala",
  title =        "Chemical physics of surfaces, catalysis and membranes:
                 proceedings of a colloquium held 28--31 August 1977 at
                 the University of Uppsala",
  volume =       "2S",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xii + 179",
  year =         "1978",
  CODEN =        "IJQCB2",
  ISBN =         "0-471-05247-7",
  ISBN-13 =      "978-0-471-05247-0",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  LCCN =         "????",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC,
  acknowledgement = ack-nhfb,
  keywords =     "catalysis -- congresses; membranes (biology) --
                 congresses; surface chemistry -- congresses",
}

@Proceedings{Lowdin:1978:PISa,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at Flagler
                 Beach, Florida, March 3--11, 1978",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at Flagler
                 Beach, Florida, March 3--11, 1978",
  volume =       "5",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xxiii + 470",
  year =         "1978",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-05635-9 (paperback)",
  ISBN-13 =      "978-0-471-05635-5 (paperback)",
  ISSN =         "0360-8832",
  LCCN =         "QH345.I53 1978",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
}

@Proceedings{Lowdin:1978:PISb,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory, Collision Phenomena,
                 and Computational Methods, held at Flagler Beach,
                 Florida, March 12--18, 1978",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory, Collision Phenomena,
                 and Computational Methods, held at Flagler Beach,
                 Florida, March 12--18, 1978",
  volume =       "12",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xvi + 548",
  year =         "1978",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-05633-2 (paperback)",
  ISBN-13 =      "978-0-471-05633-1 (paperback)",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1978",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1978:QCS,
  editor =       "Per-Olov L{\"o}wdin and Osvaldo Goscinski and
                 Jean-Louis Calais",
  booktitle =    "Quantum chemistry --- a scientific melting pot: a
                 symposium sponsored by the {Quantum Chemistry Group} to
                 mark the 500th Anniversary of the {University of
                 Uppsala}. Held 31 August through 4 September, 1977",
  title =        "Quantum chemistry --- a scientific melting pot: a
                 symposium sponsored by the {Quantum Chemistry Group} to
                 mark the 500th Anniversary of the {University of
                 Uppsala}. Held 31 August through 4 September, 1977",
  volume =       "12 (supplement 1)",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xi + 423",
  year =         "1978",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  LCCN =         "QD462.A1 Q367 1978",
  bibdate =      "Tue Dec 05 06:44:45 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses; Uppsala Universitet",
  xxISBN =       "none",
}

@Proceedings{Lowdin:1979:PISa,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory, Collision Phenomena,
                 Quantum Statistics, and Computational Methods, held in
                 honor of Alberte and Bernard Pullman at Flagler Beach,
                 Florida, March 11--17, 1979",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory, Collision Phenomena,
                 Quantum Statistics, and Computational Methods, held in
                 honor of Alberte and Bernard Pullman at Flagler Beach,
                 Florida, March 11--17, 1979",
  volume =       "13",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xvi + 720",
  year =         "1979",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1979",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  price =        "US\$30.00 (paperback)",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
  xxISBN =       "none",
}

@Proceedings{Lowdin:1979:PISb,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology, held in honor of
                 Alberte and Bernard Pullman at Flagler Beach, Florida,
                 March 4--10, 1979",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology, held in honor of
                 Alberte and Bernard Pullman at Flagler Beach, Florida,
                 March 4--10, 1979",
  volume =       "6",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xiii + 512",
  year =         "1979",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  LCCN =         "QH 345 I609 1979; QH345.I53 1979",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  price =        "US\$30.00 (paperback)",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
  xxISBN =       "none",
}

@Proceedings{Lowdin:1980:PISa,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology, held at Palm Coast,
                 Florida, March 5--8, 1980",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology, held at Palm Coast,
                 Florida, March 5--8, 1980",
  volume =       "7",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xi + 436",
  year =         "1980",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-09190-1",
  ISBN-13 =      "978-0-471-09190-5",
  ISSN =         "0360-8832",
  LCCN =         "QH345.I53 1980",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 OCLC WorldCat database; University of California MELVYL
                 catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
}

@Proceedings{Lowdin:1980:PISb,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory, Collision Phenomena,
                 Quantum Statistics, and Computational Methods, held at
                 Flagler Beach, Florida, March 10--20, 1980",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory, Collision Phenomena,
                 Quantum Statistics, and Computational Methods, held at
                 Flagler Beach, Florida, March 10--20, 1980",
  volume =       "14",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xix + 732",
  year =         "1980",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-09189-8 (paperback)",
  ISBN-13 =      "978-0-471-09189-9 (paperback)",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1980",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  note =         "Held as two symposia: the first, The International
                 Symposium on Atomic, Molecular, and Solid-State Theory,
                 Collision Phenomena and Computational Quantum
                 Chemistry, Mar. 9--15, 1980, in honor of E. Bright
                 Wilson; the second, The International Symposium on
                 Fundamentals of Quantum Statistics and Quantum Theory,
                 particularly Density Matrix Formalism, Mar. 16--20,
                 1980. 20th Sanibel symposia.",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1981:PISa,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory, Collision Phenomena,
                 and Computational Quantum Chemistry, held at Flagler
                 Beach, Florida, March 8--14, 1981",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory, Collision Phenomena,
                 and Computational Quantum Chemistry, held at Flagler
                 Beach, Florida, March 8--14, 1981",
  volume =       "15",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xvi + 730",
  year =         "1981",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-86671-7",
  ISBN-13 =      "978-0-471-86671-8",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1981; QH 345 I609 1981",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1981:PISb,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology, held at Palm Coast,
                 Florida, March 5--7, 1981",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology, held at Palm Coast,
                 Florida, March 5--7, 1981",
  volume =       "8",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xiii + 484",
  year =         "1981",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-86671-7",
  ISBN-13 =      "978-0-471-86671-8",
  ISSN =         "0360-8832",
  LCCN =         "QH 345 I609 1981",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
}

@Proceedings{Lowdin:1982:PISa,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Chemistry, Theory of Condensed Matter, and Propagator
                 Methods in the Quantum Theory of Matter, held at
                 Flagler Beach, Florida, March 1--3 and 7--13, 1982",
  title =        "Proceedings of the International Symposium on Quantum
                 Chemistry, Theory of Condensed Matter, and Propagator
                 Methods in the Quantum Theory of Matter, held at
                 Flagler Beach, Florida, March 1--3 and 7--13, 1982",
  volume =       "16",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xviii + 674",
  year =         "1982",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-89124-X (paperback)",
  ISBN-13 =      "978-0-471-89124-6 (paperback)",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1982",
  MRclass =      "82-06 (81-06)",
  MRnumber =     "84i:82002",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 MathSciNet database; University of California MELVYL
                 catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses; quantum theory --
                 congresses",
}

@Proceedings{Lowdin:1982:PISb,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at Palm Coast,
                 Florida, March 4--6, 1982",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at Palm Coast,
                 Florida, March 4--6, 1982",
  volume =       "9",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xii + 430",
  year =         "1982",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-89123-1",
  ISBN-13 =      "978-0-471-89123-9",
  ISSN =         "0360-8832",
  LCCN =         "QH345.I53 1982",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
}

@Proceedings{Lowdin:1983:NHQ,
  editor =       "Per-Olov L{\"o}wdin and Bernard Pullman",
  booktitle =    "New horizons of quantum chemistry: proceedings of the
                 Fourth International Congress of Quantum Chemistry,
                 held at Uppsala, Sweden, June 14--19, 1982",
  title =        "New horizons of quantum chemistry: proceedings of the
                 Fourth International Congress of Quantum Chemistry,
                 held at Uppsala, Sweden, June 14--19, 1982",
  publisher =    pub-REIDEL,
  address =      pub-REIDEL:adr,
  pages =        "ix + 475",
  year =         "1983",
  ISBN =         "90-277-1526-2",
  ISBN-13 =      "978-90-277-1526-5",
  LCCN =         "QD462.A1 I57 1982",
  bibdate =      "Fri Nov 17 10:27:16 2000",
  bibsource =    "http://falcon.kvac.uu.se/swe/personal/PerOlovLowdinPub.html;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  acknowledgement = ack-nhfb,
}

@Proceedings{Lowdin:1983:PISa,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn and David
                 Micha",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory, Collision Phenomena,
                 and Computational Quantum Chemistry, held at Flagler
                 Beach, Florida, March 3--12, 1983",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Solid-State Theory, Collision Phenomena,
                 and Computational Quantum Chemistry, held at Flagler
                 Beach, Florida, March 3--12, 1983",
  volume =       "17",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xix + 650",
  year =         "1983",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-88169-4",
  ISBN-13 =      "978-0-471-88169-8",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1983",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1983:PISb,
  editor =       "Per-Olov L{\"o}wdin and Michael C. Zerner",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at Palm Coast,
                 Florida, March 14--16, 1983",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at Palm Coast,
                 Florida, March 14--16, 1983",
  volume =       "10",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xv + 416",
  year =         "1983",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-88168-6",
  ISBN-13 =      "978-0-471-88168-1",
  ISSN =         "0360-8832",
  LCCN =         "QH345.I53 1983",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
}

@Proceedings{Lowdin:1984:PISa,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular and Solid-State Theory, and Computational
                 Quantum Chemistry, held at Flagler Beach, Florida,
                 March 1--15, 1984",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular and Solid-State Theory, and Computational
                 Quantum Chemistry, held at Flagler Beach, Florida,
                 March 1--15, 1984",
  volume =       "18",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xiii + 740",
  year =         "1984",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-81329-X",
  ISBN-13 =      "978-0-471-81329-3",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1984",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 LOCATORplus database; University of California MELVYL
                 catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1984:PISb,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at Palm Coast,
                 Florida, March 12--15, 1984",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at Palm Coast,
                 Florida, March 12--15, 1984",
  volume =       "11",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xiii + 368",
  year =         "1984",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-81331-1",
  ISBN-13 =      "978-0-471-81331-6",
  ISSN =         "0360-8832",
  LCCN =         "QH345.I53 1984",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
}

@Proceedings{Lowdin:1985:PISa,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn and John R.
                 Sabin and Michael C. Zerner",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular and Solid-State Theory, Scattering Problems,
                 Many Body Phenomena, and Computational Quantum
                 Chemistry: held at Marineland, Florida, March 18--23,
                 1985",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular and Solid-State Theory, Scattering Problems,
                 Many Body Phenomena, and Computational Quantum
                 Chemistry: held at Marineland, Florida, March 18--23,
                 1985",
  volume =       "19",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "754",
  year =         "1985",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-84879-4",
  ISBN-13 =      "978-0-471-84879-0",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1985",
  bibdate =      "Tue Dec 26 12:39:55 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  remark =       "Physical volume does not show a copyright year,
                 although some library catalogs list this as copyright
                 1986.",
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1985:PISb,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at Marineland,
                 Florida, March 14--16, 1985",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at Marineland,
                 Florida, March 14--16, 1985",
  volume =       "12",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xii + 288",
  year =         "1985",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-84878-6 (paperback)",
  ISBN-13 =      "978-0-471-84878-3 (paperback)",
  ISSN =         "0360-8832",
  LCCN =         "QH345.I53 1985",
  bibdate =      "Tue Dec 26 12:39:57 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  remark =       "Physical volume does not show a copyright year,
                 although some library catalogs list this as copyright
                 1986.",
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
}

@Proceedings{Lowdin:1986:PISa,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn and John R.
                 Sabin and Michael C. Zerner",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular and Solid-State Theory, Scattering Problems,
                 Many Body Phenomena, and Computational Quantum
                 Chemistry: held at Marineland, Florida, March 10--15,
                 1986",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular and Solid-State Theory, Scattering Problems,
                 Many Body Phenomena, and Computational Quantum
                 Chemistry: held at Marineland, Florida, March 10--15,
                 1986",
  volume =       "20",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "788",
  year =         "1986",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-85972-9",
  ISBN-13 =      "978-0-471-85972-7",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1986",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1986:PISb,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at Marineland,
                 Florida, March 6--8, 1986",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at Marineland,
                 Florida, March 6--8, 1986",
  volume =       "13",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xii + 317 + 4",
  year =         "1986",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-84878-6 (paperback)",
  ISBN-13 =      "978-0-471-84878-3 (paperback)",
  ISSN =         "0360-8832",
  LCCN =         "QH345.I53 1986",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
}

@Proceedings{Erdahl:1987:DMD,
  editor =       "Robert Erdahl and Vedene H. {Smith, Jr.}",
  booktitle =    "Density Matrices and Density Functionals.
                 {Proceedings} of the {A. John (Albert John) Coleman}
                 Symposium",
  title =        "Density Matrices and Density Functionals.
                 {Proceedings} of the {A. John (Albert John) Coleman}
                 Symposium",
  publisher =    pub-REIDEL,
  address =      pub-REIDEL:adr,
  pages =        "xvi + 722",
  year =         "1987",
  ISBN =         "90-277-2477-6",
  ISBN-13 =      "978-90-277-2477-9",
  LCCN =         "QC174.17.D44 D47 1987",
  bibdate =      "Thu Nov 19 11:08:08 MST 2015",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/m/march-norman-h.bib;
                 z3950.loc.gov:7090/Voyager",
  acknowledgement = ack-nhfb # " and " # ack-gwm,
  remark =       "Proceedings of a three day conference, held in August
                 1985 and hosted jointly by the Departments of
                 Chemistry, and Mathematics and Statistics of Queen's
                 University.",
  subject =      "Density matrices; Congresses; Density functionals;
                 Coleman, A. John; (Albert John)",
  subject-dates = "1918--",
  tableofcontents = "Preface / / ix \\
                 The publications of A. John Coleman / xiii \\
                 A Tribute to A. John Coleman --- The ``Tame''
                 Mathematician / P. O. L{\"o}wdin / 1 \\
                 Reduced Density Matrices: 1929--1989 / A. J. Coleman /
                 5 \\
                 Some Aspects on the Development of the Theory of
                 Reduced Density Matrices and the Representability
                 Problem / P. O. L{\"o}wdin / 21 \\
                 Representability Conditions / Robert Erdahl / 51 \\
                 On the Diagonal $N$-Representability Problem / M. M.
                 Mestechkin / 77 \\
                 Fermion $N$-Representability Conditions Generated by a
                 Decomposition of the 1-Particle Identity Operator onto
                 Mutually Orthogonal Projection Operators / Hubert
                 Grudzinski / 89 \\
                 The Unitarily Invariant Decomposition of Hermitian
                 Operators / Zong-Hao Zeng and Chia-Chung Sun / 115 \\
                 Building Up $N$-Electron States with Symplectic
                 Symmetry / Z. H. Zeng, C. C. Sun and A. J. Coleman /
                 141 \\
                 Time Dependent Antisymmetrized Geminal Power Theory
                 Using a Coherent State Formulation / E. Deumens, B.
                 Weiner, and Y. {\"O}hrn / 167 \\
                 Griffiths Inequalities for Fermion Systems / J. K.
                 Percus / 193 \\
                 Entropy of Reduced Density Matrices / Mary Beth Ruskal
                 / 213 \\
                 A Lower Bound to the Ground State Energy of a Boson
                 System With Fermion Source / M. Rosina, B. Golli and R.
                 M. Erdahl / 231 \\
                 Reduced Density Operators, Their Related von Neumann
                 Density Operators, Close Cousins of These, and Their
                 Physical Interpretation / Everett G. Larson / 249 \\
                 Theory and Practice of the Spin-Adapted Reduced
                 Hamiltonians (SRH) / C. Valdemoro / 275 \\
                 Variational Principle with Built-In Pure State
                 $N$-Representability Conditions. The $N$-Electron Case
                 / Eduardo V. Ludena / 289 \\
                 Wigner Distributions as Representations of the Density
                 Matrix / Leon Cohen / 305 \\
                 Inter-Relationships Between Various Representations of
                 One-Matrices and Related Densities: A Road Map and an
                 Example / Ajit J. Thakkar, Anthony C. Tanner and Vedene
                 H. Smith, Jr. / 327 \\
                 Current Problems in Density Functional Theory / E.
                 Zaremba / 339 \\
                 The Interface Between Reduced Density Matrices and
                 Density Functional Theory / John E. Harriman / 359 \\
                 The Physics Underlying the Langreth--Mehl Scheme for
                 Non-Uniform Systems / David C. Langreth / 375 \\
                 Understanding Energy Differences in Density Functional
                 Theory / S. H. Vosko and Jolanta B. Lagowski / 391 \\
                 Density Functional Calculations of Molecular Bond
                 Energies / A. D. Becke / 443 \\
                 Non-Local Effects on Atomic and Molecular Correlation
                 Energies Studied with a Gradient-Corrected Density
                 Functional / A. Savin, H. Preuss and H. Stoll / 457 \\
                 An Evaluation of Local Electron Correlation Corrections
                 and Non-Local Exchange Corrections to the
                 Hartree--Fock--Slater Method from Calculations on Bond
                 Energies and Electronic Spectra of Molecular Systems /
                 Vincenzo Tschinke and Tom Ziegler / 467 \\
                 Correlation Energy Functionals of One-Matrices and
                 Hartree-Fock Densities / Mel Levy / 479 \\
                 Some Remarks on Scaling Relations in Density Functional
                 Theory / Weitao Yang / 499 \\
                 Deduction of Semiempirical MO Methods from Density
                 Functional Theory / Einar Lindholm and Stig Lundqvist /
                 507 \\
                 Charge and Spin Densities in Molecular Solids: Local
                 Density Functional Calculations Versus Experiment /
                 Pierre J. Becker / 517 \\
                 A Functional of the Two-Particle Density Matrix for the
                 Approximate Calculation of the Electronic Correlation
                 Energy / Renato Colle and Oriano Salvetti / 545 \\
                 Extracules, Intracules, Correlation Holes, Potentials,
                 Coefficients and All That / Ajit J. Thakkar / 553 \\
                 The Exact Schr{\"o}dinger Equation for the Electron
                 Density / Geoffrey Hunter / 583 \\
                 Adiabatic Separation, Broken Symmetries and Geometry
                 Optimization / Osvaldo Goscinski and Vlaidmiro Mujica /
                 597 \\
                 Asymptotic Results for Density Matrices and Electron
                 Density in Atoms and Nearly Spherical Molecules / N. H.
                 March and R. Pucci / 613 \\
                 An Algorithm for Calculating Isoelectronic Changes in
                 Energies, Densities, and One-Matrices / Jean E. Osburn
                 and Mel Levy / 629 \\
                 Atoms and Ions in the Limit of Large Nuclear Charge /
                 Jos{\'e} L. G{\'a}zquez, Marcelo Galv{\'a}n, Elba Ortiz
                 and Alberto Vela / 643 \\
                 Improved Thomas--Fermi Theory for Atoms / Swapan K.
                 Ghosh and Robert G. Parr / 663 \\
                 A Bond Energy from Quantum Mechanics / R. F. W. Bader
                 and K. B. Wiberg / 677 \\
                 Measured Electron Densities and Band Structure
                 Calculations / John Avery and Peter Sommer-Larsen / 683
                 \\
                 X-ray Orthonormal Orbital Model for Crystallography /
                 L. J. Massa / 707 \\
                 Index / 717",
}

@Proceedings{Lowdin:1987:PIS,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn and John R.
                 Sabin and Michael C. Zerner",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at Marineland,
                 Florida, March 12--14, 1987",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at Marineland,
                 Florida, March 12--14, 1987",
  volume =       "14",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xii + 351",
  year =         "1987",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  LCCN =         "QH345.I53 1987",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
  xxISBN =       "none",
}

@Proceedings{Ohrn:1987:PIS,
  editor =       "Yngve {\"O}hrn and John R. Sabin and Michael C. Zerner
                 and Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Chemistry, Solid-State Theory, and Computational
                 Methods: held at Marineland, Florida, March 12--21,
                 1987",
  title =        "Proceedings of the International Symposium on Quantum
                 Chemistry, Solid-State Theory, and Computational
                 Methods: held at Marineland, Florida, March 12--21,
                 1987",
  volume =       "21",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "768",
  year =         "1987",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1987",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
  xxISBN =       "none",
}

@Proceedings{Carbo:1988:QCB,
  editor =       "Ram{\'o}n Carb{\'o}",
  booktitle =    "Quantum chemistry: basic aspects, actual trends:
                 proceedings of an International Workshop on Quantum
                 Chemistry, Girona, Spain, 13--18 June 1988",
  title =        "Quantum chemistry: basic aspects, actual trends:
                 proceedings of an International Workshop on Quantum
                 Chemistry, Girona, Spain, 13--18 June 1988",
  volume =       "62",
  publisher =    pub-ELSEVIER,
  address =      pub-ELSEVIER:adr,
  pages =        "xiii + 622",
  year =         "1988",
  ISBN =         "0-444-87494-1",
  ISBN-13 =      "978-0-444-87494-8",
  LCCN =         "QD450.S7 no.62; QD462.A1 I58 1988",
  bibdate =      "Mon Dec 18 10:51:08 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  price =        "NL FL375",
  series =       "Studies in physical and theoretical chemistry",
  acknowledgement = ack-nhfb,
}

@Proceedings{Lowdin:1988:PISa,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Chemistry, Solid-State Theory, and Computational
                 Methods: held at the University of Florida Whitney
                 Marine Laboratory at Marineland, Florida, March 12--19,
                 1988",
  title =        "Proceedings of the International Symposium on Quantum
                 Chemistry, Solid-State Theory, and Computational
                 Methods: held at the University of Florida Whitney
                 Marine Laboratory at Marineland, Florida, March 12--19,
                 1988",
  volume =       "22",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "744",
  year =         "1988",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-50692-3",
  ISBN-13 =      "978-0-471-50692-8",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1988",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1988:PISb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at the
                 University of Florida Whitney Marine Laboratory at
                 Marineland, Florida, March 12--19, 1988",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at the
                 University of Florida Whitney Marine Laboratory at
                 Marineland, Florida, March 12--19, 1988",
  volume =       "15",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xxvii + 3 + 301",
  year =         "1988",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-50693-1",
  ISBN-13 =      "978-0-471-50693-5",
  ISSN =         "0360-8832",
  LCCN =         "QH345.I625 1988",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
}

@Proceedings{Lowdin:1989:PISa,
  editor =       "Per-Olov L{\"o}wdin and John R. Sabin and Michael C.
                 Zerner and N. Yngve {\"O}hrn",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Chemistry, Solid-State Theory, and Molecular Dynamics:
                 held at St. Augustine, Florida, April 1--8, 1989",
  title =        "Proceedings of the International Symposium on Quantum
                 Chemistry, Solid-State Theory, and Molecular Dynamics:
                 held at St. Augustine, Florida, April 1--8, 1989",
  volume =       "23",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xxxiii + 732",
  year =         "1989",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-52597-9",
  ISBN-13 =      "978-0-471-52597-4",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1989",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1989:PISb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at St.
                 Augustine, Florida, April 1--8, 1989",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at St.
                 Augustine, Florida, April 1--8, 1989",
  volume =       "16",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "iv + 2 + 345",
  year =         "1989",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-52598-7",
  ISBN-13 =      "978-0-471-52598-1",
  ISSN =         "0360-8832",
  LCCN =         "QH345.I625 1989",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
}

@Proceedings{Lowdin:1990:PISa,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Chemistry, Solid-State Physics, and Computational
                 Methods: held at the Ponce de Leon Conference Center,
                 St. Augustine, Florida, March 17--24, 1990",
  title =        "Proceedings of the International Symposium on Quantum
                 Chemistry, Solid-State Physics, and Computational
                 Methods: held at the Ponce de Leon Conference Center,
                 St. Augustine, Florida, March 17--24, 1990",
  volume =       "24",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xxxvii + 892",
  year =         "1990",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-54599-6",
  ISBN-13 =      "978-0-471-54599-6",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 1990",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1990:PISb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at the Ponce de
                 Leon Conference Center, St. Augustine, Florida, March
                 17--24, 1990",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at the Ponce de
                 Leon Conference Center, St. Augustine, Florida, March
                 17--24, 1990",
  volume =       "17",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xxxi + 206",
  year =         "1990",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-54598-8",
  ISBN-13 =      "978-0-471-54598-9",
  ISSN =         "0360-8832",
  LCCN =         "QH345.I53 1990",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
}

@Proceedings{Lowdin:1991:PISa,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Chemistry, Solid-State Physics, and Computational
                 Methods: held at the Ponce de Leon Conference Center,
                 St. Augustine, Florida, March 9--16, 1991",
  title =        "Proceedings of the International Symposium on Quantum
                 Chemistry, Solid-State Physics, and Computational
                 Methods: held at the Ponce de Leon Conference Center,
                 St. Augustine, Florida, March 9--16, 1991",
  volume =       "25",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xxxviii + 704",
  year =         "1991",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-57349-3",
  ISBN-13 =      "978-0-471-57349-4",
  ISSN =         "0360-8832",
  LCCN =         "QD462 .I61 no.25 1991",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1991:PISb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at the Ponce de
                 Leon Conference Center, St. Augustine, Florida, March
                 9--16, 1991",
  title =        "Proceedings of the International Symposium on Quantum
                 Biology and Quantum Pharmacology: held at the Ponce de
                 Leon Conference Center, St. Augustine, Florida, March
                 9--16, 1991",
  volume =       "18",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xxxiv + 342",
  year =         "1991",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-57348-5",
  ISBN-13 =      "978-0-471-57348-7",
  ISSN =         "0360-8832",
  LCCN =         "QH301.I52 1991",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
}

@Proceedings{Lowdin:1992:PISa,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory and
                 Computational Methods: held at the Ponce de Leon
                 Conference Center, St. Augustine, Florida, March
                 14--21, 1992",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory and
                 Computational Methods: held at the Ponce de Leon
                 Conference Center, St. Augustine, Florida, March
                 14--21, 1992",
  volume =       "26",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xxvi + 896",
  year =         "1992",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-59463-6",
  ISBN-13 =      "978-0-471-59463-5",
  ISSN =         "0360-8832",
  LCCN =         "QD462.A1 I52 no.26",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1992:PISb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at the Ponce de Leon
                 Conference Center, St. Augustine, Florida, March
                 14--21, 1992",
  title =        "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at the Ponce de Leon
                 Conference Center, St. Augustine, Florida, March
                 14--21, 1992",
  volume =       "19",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xxiv + 278",
  year =         "1992",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-59454-7",
  ISBN-13 =      "978-0-471-59454-3",
  ISSN =         "0360-8832",
  LCCN =         "QH345.I54 1992",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
}

@Proceedings{Lowdin:1993:PISa,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn and John R.
                 Sabin and Michael C. Zerner",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory and
                 Computational Methods: held at St. Augustine, Florida,
                 March 13--20, 1993",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory and
                 Computational Methods: held at St. Augustine, Florida,
                 March 13--20, 1993",
  volume =       "27",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xxvii + 828",
  year =         "1993",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-02505-4",
  ISBN-13 =      "978-0-471-02505-4",
  ISSN =         "0360-8832",
  LCCN =         "QD453.A1 I58 S95, no.27",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 OCLC WorldCat database; University of California MELVYL
                 catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1993:PISb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at St. Augustine,
                 Florida, March 13--20, 1993",
  title =        "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at St. Augustine,
                 Florida, March 13--20, 1993",
  volume =       "20",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xxiii + 230",
  year =         "1993",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-02504-6",
  ISBN-13 =      "978-0-471-02504-7",
  ISSN =         "0360-8832",
  LCCN =         "QH345.I54 1993",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
}

@Book{Nye:1993:CPT,
  author =       "Mary Jo Nye",
  title =        "From Chemical Philosophy to Theoretical Chemistry:
                 Dynamics of Matter and Dynamics of Disciplines,
                 1800--1950",
  publisher =    pub-U-CALIFORNIA-PRESS,
  address =      pub-U-CALIFORNIA-PRESS:adr,
  pages =        "xvii + 328",
  year =         "1993",
  ISBN =         "0-520-08210-9",
  ISBN-13 =      "978-0-520-08210-6",
  LCCN =         "QD452 .N94 1993",
  bibdate =      "Mon Jun 12 08:14:14 MDT 2017",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 z3950.loc.gov:7090/Voyager",
  URL =          "http://www.loc.gov/catdir/bios/ucal051/92043114.html;
                 http://www.loc.gov/catdir/description/ucal041/92043114.html",
  acknowledgement = ack-nhfb,
  shorttableofcontents = "Scientific Disciplines: The Construction of
                 Identity \\
                 The Historical Demarcation of Chemistry and Physics:
                 Founder Myths and Social Realities \\
                 Philosophy of Chemistry and Chemical Philosophy:
                 Epistemological Values in the Nineteenth Century \\
                 Language and Image in Nineteenth-Century Chemistry \\
                 Physical Chemistry as Theoretical Chemistry: A Dynamics
                 for Matter at the Turn of the Century \\
                 The Paris School of Theoretical Organic Chemistry,
                 1880-1930 \\
                 The london-Manchester School of Theoretical Organic
                 Chemistry, 1880-1930 \\
                 Reaction Mechanisms: Christopher Ingold and the
                 Integration of Physical and Organic Chemistry,
                 1920-1950 \\
                 Quantum Chemistry and chemical Physics, 1920-1950 \\
                 Conclusion: Theoretical Chemistry, Discipline-
                 Building, and the Commensurability of Physics and
                 Chemistry",
  subject =      "Chemistry, Physical and theoretical; History; 19th
                 century; 20th century",
  tableofcontents = "Plates / xi \\
                 Abbreviations / xiii \\
                 Acknowledgments / xv \\
                 Introduction / 1 \\
                 Part One \\
                 Discipline-Building in Chemistry \\
                 1 Scientific Disciplines: The Construction of Identity
                 / 13 \\
                 The Study of Scientific Disciplines, Schools, and
                 Traditions / 13 \\
                 Elements of Identity in the History of Scientific
                 Disciplines / 19 \\
                 2 The Historical Demarcation of Chemistry and Physics:
                 Founder Myths and Social Realities / 32 \\
                 The Historical Problem of the Relation of Chemistry to
                 Physics / 32 \\
                 Historical Accounts of the Origins of Chemistry and
                 Physics as Disciplines / 34 \\
                 Academies and Societies / 40 \\
                 Journals for the Physical and Chemical Sciences / 43
                 \\
                 Lecture Traditions in Chemistry and Physics / 46 \\
                 Laboratories for Chemistry and Physics / 49 \\
                 Conclusion: History and Hierarchy / 53 \\
                 3 Philosophy of Chemistry and Chemical Philosophy:
                 Epistemological Values in the Nineteenth Century / 56
                 \\
                 The Epistemology of Chemistry / 56 \\
                 Early Chemical Philosophy: Aims and Methods / 59 \\
                 Natural History and Chemical Explanation in the
                 Nineteenth Century / 65 \\
                 Atomism and Chemical Explanation in the Nineteenth
                 Century / 68 \\
                 Mechanics, the Elusive Dream / 71 \\
                 4 Language and Image in Nineteenth-Century Chemistry /
                 / 73 \\
                 Signs and Meanings / 73 \\
                 Metaphors and Definitions / 77 \\
                 Nomenclature and Taxonomy / 81 \\
                 Symbols and Algebraic Formulas / 89 \\
                 Symbols and Structural Formulas / 92 \\
                 Part Two \\
                 Chemical Problems and Research Schools \\
                 5 Physical Chemistry as Theoretical Chemistry: A
                 Dynamics for Matter at the Turn of the Century / 105
                 \\
                 The Disciplinary Origins of Physical Chemistry / 105
                 \\
                 The Limits of Classical Organic Chemistry / 110 \\
                 From Chemical Affinity to Chemical Thermodynamics The
                 Controversy over the Radiation Hypothesis / 121 \\
                 Ions, Electrons, and Affinity / 129 / 116 \\
                 6 The Paris School of Theoretical Organic Chemistry, /
                 1880--1930 / 139 \\
                 Theoretical Physics and Physical Chemistry at the End
                 of the Nineteenth Century / 139 \\
                 French Chemistry and the Education of Robert Lespieau
                 ca. / 1890 \\ / 142 \\
                 The Practice of Organic Chemistry at the Ecole Normale,
                 / 1904--1934 / 145 \\
                 Theoretical Chemistry at the Ecole Normale, 1922--1934
                 / 148 \\
                 The Theory of ``Synionie'' and French Theoretical
                 Chemistry / 151 \\
                 The ``French'' and ``Anglo--Saxon'' Schools of
                 Theoretical Organic Chemistry / 157 \\
                 Lespieau's Research School and the Discipline of
                 Theoretical Chemistry / 160 \\
                 7 The London--Manchester School of Theoretical Organic
                 Chemistry, 1880--1930 / 163 \\
                 The London--Manchester Network (and the German
                 Connection) / 164 \\
                 Problems of Molecular Structure and Dynamics ca. / 1900
                 \\ / 170 \\
                 Lapworth and Lowry in London: Theories for Organic
                 Chemistry / 173 \\
                 Manchester Chemistry and Physics in the Early Twentieth
                 Century / 177 \\
                 A Theory of Chemical Dynamics / 182 \\
                 Manchester--London Controversies, 1922--1928 / 187 \\
                 Some Comparisons and Preliminary Conclusions / 193 \\
                 8 Reaction Mechanisms: Christopher Ingold and the
                 Integration of Physical and Organic Chemistry, /
                 1920--1950 / 196 \\
                 The Career of Christopher Ingold / 196 \\
                 ``Classical'' Structure Chemistry versus Polar
                 Chemistry / 199 \\
                 Conjugated Systems and Resonance / 202 \\
                 Principles for Aliphatic and Aromatic Substitution A
                 General Theory for a New Physical Organic Chemistry /
                 211 \\
                 Part Three \\ / 207 \\
                 Converging Traditions and Rival Disciplines \\
                 9 Quantum Chemistry and Chemical Physics, / 1920--1950
                 / 227 \\
                 The Application of Quantum Mechanics to Molecules in
                 the 1920s / 228 \\
                 Chemists and Quantum Mechanics in the 1920s and / 1930s
                 / 239 \\
                 Quantum Chemistry and Chemical Physics in the 1930s and
                 / 1940s / 250 / 10 Conclusion: Theoretical Chemistry,
                 Discipline Building, and the Commensurability of
                 Physics and Chemistry / 262 \\
                 Physics Is Chemistry / Chemistry Is Physics? / 262 \\
                 Discipline-Building and Theoretical Chemistry / 263 \\
                 Theoretical Chemistry and the Distinctiveness of
                 Chemistry / 274 \\
                 Glossary / 285 \\
                 Bibliography / 287 \\
                 Index / 313",
}

@Proceedings{Lowdin:1994:PISa,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory and
                 Computational Methods: held at the Marriott at Sawgrass
                 Resort, Ponte Vedra Beach, Florida, February 12--19,
                 1994",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory and
                 Computational Methods: held at the Marriott at Sawgrass
                 Resort, Ponte Vedra Beach, Florida, February 12--19,
                 1994",
  volume =       "28",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "vii + 712",
  year =         "1994",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-12125-8",
  ISBN-13 =      "978-0-471-12125-1",
  ISSN =         "0360-8832",
  LCCN =         "QD453.A1 I58 S95, no.28",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 OCLC WorldCat database; University of California MELVYL
                 catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
}

@Proceedings{Lowdin:1994:PISb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at Ponte Vedra Beach,
                 Florida, February 12--19, 1994",
  title =        "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at Ponte Vedra Beach,
                 Florida, February 12--19, 1994",
  volume =       "21",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "iv + 253",
  year =         "1994",
  CODEN =        "IJQBDZ",
  ISBN =         "0-471-12016-2",
  ISBN-13 =      "978-0-471-12016-2",
  ISSN =         "0360-8832",
  LCCN =         "QH345 .I625 1994",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 OCLC WorldCat database; University of California MELVYL
                 catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
}

@Proceedings{Lowdin:1995:PISa,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory and
                 Computational Methods: held at Ponce de Leon Resort,
                 St. Augustine, Florida, February 25--March 4, 1995",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory and
                 Computational Methods: held at Ponce de Leon Resort,
                 St. Augustine, Florida, February 25--March 4, 1995",
  volume =       "29",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "vii + 712",
  year =         "1995",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  LCCN =         "QD453.A1 I62 no.29",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 OCLC WorldCat database; University of California MELVYL
                 catalog",
  series =       ser-IJQC-QCS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum chemistry -- congresses",
  xxISBN =       "none",
}

@Proceedings{Lowdin:1995:PISb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at Ponce de Leon Resort,
                 St. Augustine, Florida, February 25--March 4, 1995",
  title =        "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at Ponce de Leon Resort,
                 St. Augustine, Florida, February 25--March 4, 1995",
  volume =       "22",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "iii + 227",
  year =         "1995",
  CODEN =        "IJQBDZ",
  ISSN =         "0360-8832",
  LCCN =         "QH345.I54 1995",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 University of California MELVYL catalog",
  series =       ser-IJQC-QBS,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
  xxISBN =       "none",
}

@Proceedings{Lowdin:1996:PISa,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory and
                 Computational Methods: held at Ponce de Leon Resort,
                 St. Augustine, Florida, February 24--March 2, 1996",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory and
                 Computational Methods: held at Ponce de Leon Resort,
                 St. Augustine, Florida, February 24--March 2, 1996",
  volume =       "60(7)",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "xxxiii + 510",
  day =          "15",
  month =        dec,
  year =         "1996",
  CODEN =        "IJQSAF",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  LCCN =         "????",
  bibdate =      "Mon Nov 20 16:08:29 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 OCLC WorldCat database",
  note =         "Quantum Chemistry Symposium No. 30.",
  series =       ser-IJQC,
  acknowledgement = ack-nhfb,
  xxISBN =       "none",
}

@Proceedings{Lowdin:1996:PISb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at Ponce de Leon Resort,
                 St. Augustine, Florida, February 24--March 2, 1996",
  title =        "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at Ponce de Leon Resort,
                 St. Augustine, Florida, February 24--March 2, 1996",
  volume =       "60(8)",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "??--??",
  day =          "20",
  month =        dec,
  year =         "1996",
  CODEN =        "IJQSAF",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  LCCN =         "????",
  bibdate =      "Mon Nov 20 16:08:29 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Quantum Biology Symposium No. 23.",
  series =       ser-IJQC,
  acknowledgement = ack-nhfb,
  xxISBN =       "none",
}

@Proceedings{Lowdin:1997:PISa,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory and
                 Computational Methods: held at Ponce de Leon Resort,
                 St. Augustine, Florida, March 1--March 7, 1997",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory and
                 Computational Methods: held at Ponce de Leon Resort,
                 St. Augustine, Florida, March 1--March 7, 1997",
  volume =       "65(5)",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "377--1030",
  year =         "1997",
  CODEN =        "IJQSAF",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  LCCN =         "QD462.A1",
  bibdate =      "Mon Nov 20 15:46:02 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 OCLC WorldCat database",
  note =         "Quantum Chemistry Symposium No. 31",
  series =       ser-IJQC,
  acknowledgement = ack-nhfb,
  xxISBN =       "none",
}

@Proceedings{Lowdin:1997:PISb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at Ponce de Leon Resort,
                 St. Augustine, Florida, March 1--7, 1997",
  title =        "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at Ponce de Leon Resort,
                 St. Augustine, Florida, March 1--7, 1997",
  volume =       "65(6)",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "1031--1173",
  year =         "1997",
  CODEN =        "IJQSAF",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  LCCN =         "QH345.I54 1995",
  bibdate =      "Mon Nov 20 15:52:27 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Quantum Biology Symposium No. 24.",
  series =       ser-IJQC,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
  xxISBN =       "none",
}

@Proceedings{Lowdin:1998:PISa,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn and John R.
                 Sabin and Michael C. Zerner",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory: held at Ponce
                 de Leon Resort, St. Augustine, Florida, February
                 21--27, 1998",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory: held at Ponce
                 de Leon Resort, St. Augustine, Florida, February
                 21--27, 1998",
  volume =       "70(4/5)",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "529--1098",
  year =         "1998",
  CODEN =        "IJQSAF",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Nov 20 15:46:02 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Quantum Chemistry Symposium No. 32.",
  series =       ser-IJQC,
  acknowledgement = ack-nhfb,
  xxISBN =       "none",
}

@Proceedings{Lowdin:1998:PISb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at Ponce de Leon Resort,
                 St. Augustine, Florida, February 21--27, 1998",
  title =        "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at Ponce de Leon Resort,
                 St. Augustine, Florida, February 21--27, 1998",
  volume =       "70(6)",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "1099--1215",
  year =         "1998",
  CODEN =        "IJQSAF",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  LCCN =         "QH345.I54 1995",
  bibdate =      "Mon Nov 20 15:51:19 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Quantum Biology Symposium No. 25.",
  series =       ser-IJQC,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
  xxISBN =       "none",
}

@Proceedings{Lowdin:1999:PISa,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn and John R.
                 Sabin and Michael C. Zerner",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory: held at Ponce
                 de Leon Resort, St. Augustine, Florida, February
                 27--March 5, 1999",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory: held at Ponce
                 de Leon Resort, St. Augustine, Florida, February
                 21--27, 1998",
  volume =       "75(4/5)",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "333--965",
  year =         "1999",
  CODEN =        "IJQSAF",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  bibdate =      "Mon Nov 20 15:46:02 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Quantum Chemistry Symposium No. 33.",
  series =       ser-IJQC,
  acknowledgement = ack-nhfb,
  xxISBN =       "none",
}

@Proceedings{Lowdin:1999:PISb,
  editor =       "Per-Olov L{\"o}wdin",
  booktitle =    "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at Ponce de Leon Resort,
                 St. Augustine, Florida, February 27--March 5, 1999",
  title =        "Proceedings of the International Symposium on the
                 Application of Fundamental Theory to Problems of
                 Biology and Pharmacology: held at Ponce de Leon Resort,
                 St. Augustine, Florida, February 27--March 5, 1999",
  volume =       "75(6)",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "967--1047",
  year =         "1999",
  CODEN =        "IJQSAF",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  ISSN-L =       "0020-7608",
  LCCN =         "QH345.I54 1995",
  bibdate =      "Thu Nov 16 14:42:12 MST 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Quantum Biology Symposium No. 26.",
  series =       ser-IJQC,
  acknowledgement = ack-nhfb,
  keywords =     "quantum biochemistry -- congresses; quantum
                 pharmacology -- congresses",
  xxISBN =       "none",
}

@Book{Hettema:2000:QCH,
  editor =       "Hinne Hettema",
  booktitle =    "Quantum Chemistry: Classic Scientific papers",
  title =        "Quantum Chemistry: Classic Scientific papers",
  volume =       "8",
  publisher =    pub-WORLD-SCI,
  address =      pub-WORLD-SCI:adr,
  pages =        "xxxix + 478",
  year =         "2000",
  ISBN =         "981-02-2771-X, 981-279-576-6 (e-book)",
  ISBN-13 =      "978-981-02-2771-5, 978-981-279-576-2 (e-book)",
  LCCN =         "QD462 .Q34613 2000",
  bibdate =      "Mon Jun 12 07:54:08 MDT 2017",
  bibsource =    "fsz3950.oclc.org:210/WorldCat;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  series =       "World scientific series in 20th century chemistry",
  acknowledgement = ack-nhfb,
  tableofcontents = "On the quantum theory of molecules / M. Born and R.
                 Oppenheimer \\
                 On the behaviour of eigenvalues in adiabatic processes
                 / J. von Neumann and E. Wigner \\
                 On the theory of non-adiabatic chemical reactions / F.
                 London \\
                 On the theory of the interaction between electronic and
                 nuclear motion for three-atomic, bar-shaped molecules /
                 R. Renner \\
                 On the ground state of the helium atom / E. A.
                 Hylleraas \\
                 A new calculation of the energy of helium in the ground
                 state as well as the lowest term of ortho-helium / E.
                 A. Hylleraas \\
                 The ionisation potentials of atomic configurations with
                 two electrons / E. A. Hylleraas \\
                 On the ground state term of the two-electron problem of
                 H-, He, Li+, Be++, etc. / E. A. Hylleraas \\
                 Interaction between neutral atoms and homopolar binding
                 according to quantum mechanics / W. Heitler and F.
                 London \\
                 On the quantum theory of homo-polar valence numbers /
                 F. London \\
                 On the electronic terms of the hydrogen molecule / E.
                 A. Hylleraas \\
                 On the interpretation of some appearances in the
                 molecular spectra / F. Hund \\
                 On the interpretation of molecular spectra I / F. Hund
                 \\
                 On radiationless quantum jumps / G. Wentzel \\
                 Lifetimes from resonance phenomena / E. Fues \\
                 On the interpretation of molecular spectra III / F.
                 Hund \\
                 On the interpretation of band spectra II / R. de L.
                 Kronig \\
                 On the structure of the spectra of two-atomic molecules
                 according to quantum mechanics / E. Wigner and E. E.
                 Witmer \\
                 On the structure of multiplet S-states in diatomic
                 molecules I / H. A. Kramers \\
                 On the structure of multiplet S-states in diatomic
                 molecules II / H. A. Kramers \\
                 On the spontaneous decomposition of two-atomic
                 molecules / R. de L. Kronig \\
                 On the ratio of the van der Waals forces and the
                 homo-polar binding forces / R. Eisenschitz and F.
                 London \\
                 On the theory and system of molecular forces / F.
                 London \\
                 On some properties and applications of molecular forces
                 / F. London \\
                 On simple gas reactions / H. Eyring and M. Polanyi \\
                 On the quantum theory of the double bond / E.
                 H{\"u}ckel",
}

@Proceedings{Lowdin:2000:PIS,
  editor =       "Per-Olov L{\"o}wdin and Yngve {\"O}hrn and John R.
                 Sabin",
  booktitle =    "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory, held at the
                 Ponce de Leon Resort, St. Augustine, Florida, February
                 25--March 3, 2000",
  title =        "Proceedings of the International Symposium on Atomic,
                 Molecular, and Condensed Matter Theory, held at the
                 Ponce de Leon Resort, St. Augustine, Florida, February
                 25--March 3, 2000",
  volume =       "80(4/5)",
  publisher =    pub-WILEY,
  address =      pub-WILEY:adr,
  pages =        "507--1135",
  year =         "2000",
  CODEN =        "IJQCB2",
  ISSN =         "0020-7608 (print), 1097-461X (electronic)",
  bibdate =      "Sat Nov 18 08:32:30 2000",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  note =         "Quantum Chemistry Symposium No. 34",
  series =       j-IJQC,
  acknowledgement = ack-nhfb,
  xxISBN =       "none",
}

@Book{Sabin:2002:AQC,
  editor =       "John S. Sabin and Erkki J. Br{\"a}ndas",
  booktitle =    "Advances in Quantum Chemistry: A tribute to the life
                 and work of {Per-Olov L{\"o}wdin}",
  title =        "Advances in Quantum Chemistry: {A} tribute to the life
                 and work of {Per-Olov L{\"o}wdin}",
  volume =       "41",
  publisher =    pub-ACADEMIC,
  address =      pub-ACADEMIC:adr,
  bookpages =    "xvi + 270",
  pages =        "xvi + 270",
  year =         "2002",
  ISBN =         "0-12-034841-1 (hardcover)",
  ISBN-13 =      "978-0-12-034841-1 (hardcover)",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.41",
  bibdate =      "Thu Oct 13 23:17:05 2011",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib",
  note =         "Founding editor Per-Olov L{\"o}wdin (1916--2000).",
  series =       j-ADV-QUANTUM-CHEM,
  URL =          "http://www.sciencedirect.com/science/book/9780120348411",
  acknowledgement = ack-nhfb,
}

@Book{Brandas:2004:FWQ,
  editor =       "Erkki J. Br{\"a}ndas and Eugene S. Kryachko",
  booktitle =    "Fundamental World of Quantum Chemistry: A Tribute to
                 the Memory of {Per-Olov L{\"o}wdin}. {Volume III}",
  title =        "Fundamental World of Quantum Chemistry: A Tribute to
                 the Memory of {Per-Olov L{\"o}wdin}. {Volume III}",
  publisher =    pub-KLUWER,
  address =      pub-KLUWER:adr,
  pages =        "xlvi + 677",
  year =         "2004",
  DOI =          "https://doi.org/10.1007/978-94-017-0448-9",
  ISBN =         "90-481-6687-X (print), 94-017-0448-1 (e-book)",
  ISBN-13 =      "978-90-481-6687-9 (print), 978-94-017-0448-9
                 (e-book)",
  bibdate =      "Wed Dec 4 15:42:58 MST 2013",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/h/harris-frank-e.bib;
                 https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib",
  URL =          "http://link.springer.com/book/10.1007/978-94-017-0448-9",
  acknowledgement = ack-nhfb,
  tableofcontents = "Front Matter / / i--xlvi \\
                 Per-Olov L{\"o}wdin / G. G. Hall / 1--2 \\
                 {\em In Silico\/} Chemistry: Past, Present and Future /
                 Jean-Marie Andr{\'e} / 3--21 \\
                 Weights of Spin and Permutational Symmetry Adapted
                 States for Arbitrary Elementary Spins / Jacob Katriel /
                 23--41 \\
                 Schr{\"o}dinger's Wave Equation --- A Lie Algebra
                 Treatment / B. L. Burrows, M. Cohen / 43--65 \\
                 On Supersymmetric Quantum Mechanics / M. R. Kibler, M.
                 Daoud / 67--96 \\
                 Applications of L{\"o}wdin's Metric Matrix: Atomic
                 Spectral Methods for Electronic Structure Calculations
                 / P. W. Langhoff, J. A. Boatz, R. J. Hinde / 97--114
                 \\
                 Integrals for Exponentially Correlated Four-Body
                 Systems of General Angular Symmetry / Frank E. Harris /
                 115--127 \\
                 Appendix to ``Studies in Perturbation Theory'': The
                 Problem of Partitioning / P{\'e}ter R. Surj{\'a}n,
                 {\'A}gnes Szabados / 129--185 \\
                 Treating Nonadditivity as a Perturbation: A
                 Quasi-Particle Formalism / Istv{\'a}n Mayer, Andrea
                 Hamza / 187--198 \\
                 Unified Approach to Intensities in Vibrational
                 Spectroscopies VIA Dynamic Electromagnetic Shieldings
                 at the Nuclei of a Molecule / Paolo Lazzeretti /
                 199--213 \\
                 Comparison Between the Many-Body Perturbative and
                 Green's-Function Approaches for Calculating Electron
                 Binding Energies and Affinities: Brueckner and Dyson
                 Orbitals / Ingvar Lindgren / 215--245 \\
                 Quantum Chemistry, Localization, Superconductivity, and
                 Mott--Hubbard $U$ / Sven Larsson / 247--256 \\
                 Reformulation of the Concept of Jahn--Teller Vibronic
                 Coupling Effects in Theoretical Chemistry / I. B.
                 Bersuker / 257--271 \\
                 Collisions of Atoms and Molecules in External Magnetic
                 Fields / Roman Krems, Alexander Dalgarno / 273--294 \\
                 Effects of Orbital Overlap on Calculations of Charge
                 Exchange in Atom--Surface Scattering / A. T. Amos, B.
                 L. Burrows, S. G. Davison / 295--321 \\
                 Relativistic Quantum Chemistry of Heavy and Superheavy
                 Elements: Fully Relativistic Coupled-Cluster
                 Calculations for Molecules of Heavy and Transactinide
                 Superheavy Elements / Gulzari L. Malli / 323--363 \\
                 Study of Heavy Elements by Relativistic Fock Space and
                 Intermediate Hamiltonian Coupled Cluster Methods / Uzi
                 Kaldor, Ephraim Eliav, Arie Landau / 365--406 \\
                 QED Effects in Heavy Elements / Igor Goidenko, Leonti
                 Labzowsky / 407--421 \\
                 Time and Time Reversal Symmetry in Quantum Chemical
                 Kinetics / Martin Quack / 423--474 \\
                 Solute--Solvent Interactions from QM SCRF Methods / F.
                 Javier Luque, Axel Bidon-Chanal / 475--495 \\
                 The Cavity Model with a Surface Formed by two
                 Intersecting Spheres. An Analytical Treatment / A. V.
                 Tulub / 497--520 \\
                 Quantum Mechanical Calculations on Molecules Containing
                 Positrons / Sergiy Bubin, Mauricio Cafiero, Ludwik
                 Adamowicz / 521--545 \\
                 Low-Lying Ionization Potentials of B$_3$N and
                 Photodetachment Energies of B$_3$N$^-$ Using the
                 Multiconfigurational Spin Tensor Electron Propagator
                 Method / S. Mahalakshmi, Danny L. Yeager / 547--561 \\
                 Understanding Alkyl Substituent Effects in R--O Bond
                 Dissociation Reactions in Open- and Closed-Shell
                 Systems / Michelle L. Coote, Addy Pross, Leo Radom /
                 563--579 \\
                 Hydrogen Bonding and the Energetics of Homolytic
                 Dissociation in Solution / Sylvio Canuto, Kaline
                 Coutinho / 581--599 \\
                 Theoretical Calculations of Kinetic Isotope Effects for
                 a Series of Substituted Aziridines / C. M. Jansson, N.
                 Salhi-Benachenhou, S. Lunell / 601--617 \\
                 Exploring the Catalytic Cycle of the Hydrosilylation of
                 Alkenes Catalyzed by Hydrido-Bridged Diplatinum
                 Complexes Using Electronic Structure Calculation
                 Methods / C. A. Tsipis, A. C. Tsipis, C. E. Kefalidis /
                 619--643 \\
                 Towards a Physical Explanation of the Periodic Table
                 (PT) of Chemical Elements / W. H. Eugen Schwarz /
                 645--669 \\
                 Back Matter / / 671--677",
}

@Book{Dykstra:2005:TAC,
  editor =       "Clifford E. Dykstra and Gernot Frenking and Kwang S.
                 Kim and Gustavo E. Scuseria",
  booktitle =    "Theory and Applications of Computational Chemistry:
                 the First Forty Years",
  title =        "Theory and Applications of Computational Chemistry:
                 the First Forty Years",
  publisher =    pub-ELSEVIER,
  address =      pub-ELSEVIER:adr,
  pages =        "xxvii + 1308",
  year =         "2005",
  ISBN =         "0-08-044493-8 (print), 0-444-51719-7, 0-444-51904-1
                 (flexicover)",
  ISBN-13 =      "978-0-08-044493-2 (print), 978-0-444-51719-7,
                 978-0-444-51904-7 (flexicover)",
  LCCN =         "QD39.3.E46 T45 2005",
  bibdate =      "Mon Jun 12 08:09:32 MDT 2017",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 z3950.loc.gov:7090/Voyager",
  URL =          "http://www.loc.gov/catdir/enhancements/fy0625/2005049899-d.html;
                 http://www.loc.gov/catdir/enhancements/fy0625/2005049899-t.html",
  abstract =     "Computational chemistry is a means of applying
                 theoretical ideas using computers and a set of
                 techniques for investigating chemical problems within
                 which common questions vary from molecular geometry to
                 the physical properties of substances. Theory and
                 Applications of Computational Chemistry: The First
                 Forty Years is a collection of articles on the
                 emergence of computational chemistry. It shows the
                 enormous breadth of theoretical and computational
                 chemistry today and establishes how theory and
                 computation have become increasingly linked as
                 methodologies and technologies have advanced. Written
                 by the pioneers in the field, the book presents
                 historical perspectives and insights into the subject,
                 and addresses new and current methods, as well as
                 problems and applications in theoretical and
                 computational chemistry. Easy to read and packed with
                 personal insights, technical and classical information,
                 this book provides the perfect introduction for
                 graduate students beginning research in this area. It
                 also provides very readable and useful reviews for
                 theoretical chemists.",
  acknowledgement = ack-nhfb,
  subject =      "Chemistry; Data processing",
  subject =      "SCIENCE / Chemistry / General; SCIENCE / Chemistry /
                 Physical and Theoretical; SCIENCE / Life Sciences /
                 Molecular Biology; SCIENCE / Physics / General; SCIENCE
                 / Physics / Mathematical and Computational; Chemistry;
                 Data processing; Data processing; Kemi;
                 databehandling.",
  tableofcontents = "1. Computing technologies, theories, and
                 algorithms. The making of 40 years and more of
                 theoretical and computational chemistry / Clifford E.
                 Dykstra, Gernot Frenking, Kwang S. Kim, Gustavo E.
                 Scuseria \\
                 2. Dynamical, time-dependent view of molecular theory /
                 Yngve {\"O}hrn, Erik Deumens \\
                 3. Computation of non-covalent binding affinities / J.
                 Andrew McCammon \\
                 4. Electrodynamics in computational chemistry / Linlin
                 Zhao, Shengli Zou, Encai Hao, George C. Schatz \\
                 5. Variational transition state theory / Bruce C.
                 Garrett, Donald G. Truhlar \\
                 6. Computational chemistry: Attempting to simulate
                 large molecular systems / Enrico Clementi \\
                 7. The beginnings of coupled-cluster theory: An
                 eyewitness account / Josef Paldus \\
                 8. Controlling quantum phenomena with photonic reagents
                 / Herschel Rabitz \\
                 9. First-principles calculations of anharmonic
                 vibrational spectroscopy of large molecules / R.B.
                 Gerber, G.M. Chaban, B. Brauer, Y. Miller \\
                 10. Finding minima, transition states, and following
                 reaction pathways on ab initio potential energy
                 surfaces / Hrant P. Hratchian, H. Bernhard Schlegel \\
                 11. Progress in the quantum description of vibrational
                 motion of polyatomic molecules / Joel M. Bowman, Stuart
                 Carter, Nicholas C. Handy \\
                 12. Toward accurate computations in photobiology /
                 Adalgisa Sinicropi, Massimo Olivucci \\
                 13. The nature of the chemical bond in the light of an
                 energy decomposition analysis / Matthias Lein, Gernot
                 Frenking \\
                 14. Superoperator many-body theory of molecular
                 currents: Non-equilibrium Green functions in real time
                 / Upendra Harbola, Shaul Mukamel \\
                 15. Role of computational chemistry in the theory of
                 unimolecular reaction rates / William L. Hase, Reinhard
                 Schinke \\
                 16. Molecular dynamics: An account of its evolution /
                 Raymond Kapral, Giovanni Ciccotti \\
                 17. Equations of motion methods for computing electron
                 affinities and ionization potentials / Jack Simons \\
                 18. Multireference coupled cluster method based on the
                 Brillouin-Wigner perturbation theory / Petr \v
                 C{\'a}rsky, Ji\v r{\'i} Pittner, Ivan Huba\v c \\
                 19. Electronic structure: The momentum perspective /
                 Ajit J. Thakkar \\
                 20. Recent advances in ab initio, density functional
                 theory, and relativistic electronic structure theory /
                 Haruyuki Nakano, Takahito Nakajima, Takao Tsuneda,
                 Kimihiko Hirao \\
                 21. Semiempirical quantum-chemical methods in
                 computational chemistry / Walter Thiel \\
                 22. Size-consistent state-specific multi-reference
                 methods: A survey of some recent developments / Dola
                 Pahari, Sudip Chattopadhyay, Sanghamitra Das, Debashis
                 Mukherjee, Uttam Sinha Mahapatra \\
                 23. The valence bond diagram approach: A paradigm for
                 chemical reactivity / Sason Shaik, Philippe C. Hiberty
                 \\
                 24. Progress in the development of exchange-correlation
                 functionals / Gustavo E. Scuseria, Viktor N. Staroverov
                 \\
                 25. Multiconfigurational quantum chemistry / Bj{\"o}rn
                 O. Roos \\
                 26. Concepts of perturbation, orbital interaction,
                 orbital mixing and orbital occupation / Myung-Hwan
                 Whangbo \\
                 27. G2, G3 and associated quantum chemical models for
                 accurate theoretical thermochemistry / Krishnan
                 Raghavachari, Larry A. Curtiss \\
                 28. Factors that affect conductance at the molecular
                 level / Charles W. Bauschlicher Jr., Alessandra Ricca",
}

@Book{Scerri:2008:CPP,
  editor =       "Eric R. Scerri",
  booktitle =    "Collected papers on philosophy of chemistry",
  title =        "Collected papers on philosophy of chemistry",
  publisher =    "Imperial College Press",
  address =      "London, UK",
  pages =        "x + 235",
  year =         "2008",
  ISBN =         "1-84816-137-9",
  ISBN-13 =      "978-1-84816-137-5",
  LCCN =         "QD6 .S34 2008",
  bibdate =      "Thu Nov 8 10:07:51 MST 2012",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/annscience.bib;
                 z3950.loc.gov:7090/Voyager",
  URL =          "http://www.loc.gov/catdir/toc/fy0903/2008278137.html",
  acknowledgement = ack-nhfb,
  subject =      "Chemistry; Philosophy",
  tableofcontents = "Philosophy of Chemistry and the Question of
                 Reduction: \\
                 The Case for Philosophy of Chemistry \\
                 Prediction of the Nature of Hafnium from Chemistry,
                 Bohr's Theory and Quantum Theory \\
                 Has Chemistry Been at Least Approximately Reduced to
                 Quantum Mechanics? \\
                 Reduction and Emergence in Chemistry \\
                 The Periodic Table, Electronic Configurations and the
                 Nature of the Elements: \\
                 Has the Periodic Table Been Successfully Axiomatized?
                 \\
                 The Periodic Table: The Ultimate Paper Tool in
                 Chemistry \\
                 Naive Realism, Reduction and the Intermediate Position
                 \\
                 How Ab Inito is Ab Initio Quantum Chemistry?
                 Foundations of Chemistry \\
                 Some Aspects of the Metaphysics of Chemistry and the
                 Nature of the Elements \\
                 Realism and Anti-Realism, and Educational Issues in
                 Philosophy of Chemistry: \\
                 Constructivism, Relativism and Chemistry \\
                 The Recently Claimed Observation of Atomic Orbitals and
                 Some Related Philosophical Issues \\
                 Normative and Descriptive Philosophy of Science and the
                 Role of Chemistry",
}

@Book{Scerri:2009:SPP,
  editor =       "Eric R. Scerri",
  booktitle =    "Selected papers on the periodic table",
  title =        "Selected papers on the periodic table",
  publisher =    "Imperial College Press",
  address =      "London, UK",
  pages =        "ix + 143",
  year =         "2009",
  ISBN =         "1-84816-425-4",
  ISBN-13 =      "978-1-84816-425-3",
  LCCN =         "QD467 .S347 2009",
  bibdate =      "Thu Nov 8 10:11:22 MST 2012",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/annscience.bib;
                 https://www.math.utah.edu/pub/tex/bib/foundchem.bib;
                 z3950.loc.gov:7090/Voyager",
  acknowledgement = ack-nhfb,
  subject =      "Periodic law; Chemical elements",
  tableofcontents = "Chemistry, Spectroscopy, and the Question of
                 Reduction \\
                 The Electronic Configuration Model, Quantum Mechanics
                 and Reduction \\
                 The Periodic Table and the Electron \\
                 How Good is the Quantum Mechanical Explanation of the
                 Periodic System? \\
                 Prediction and the Periodic Table \\
                 L{\"o}wdin's Remarks on the Aufbau Principle and a
                 Philosopher's View of Ab Initio Quantum Chemistry \\
                 Mendeleev's Legacy \\
                 The Role of Triads in the Evolution of the Periodic
                 Table: Past and Present \\
                 The Past and Future of the Periodic Table \\
                 The Dual Sense of the Term ``Elements'', Attempts to
                 Derive the Madelung Rule, and the Optimal Form of the
                 Periodic Table, If Any",
}

@Book{Gavroglou:2012:NPN,
  author =       "Kostas Gavroglou and Ana Sim{\~o}es",
  title =        "Neither Physics nor Chemistry: a History of Quantum
                 Chemistry",
  publisher =    pub-MIT,
  address =      pub-MIT:adr,
  pages =        "xiv + 351",
  year =         "2012",
  ISBN =         "0-262-01618-4 (hardcover)",
  ISBN-13 =      "978-0-262-01618-6 (hardcover)",
  LCCN =         "QD462 .G38 2012",
  bibdate =      "Thu Mar 5 09:57:09 MST 2015",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/bullhistchem.bib;
                 https://www.math.utah.edu/pub/tex/bib/foundchem.bib;
                 https://www.math.utah.edu/pub/tex/bib/master.bib;
                 z3950.loc.gov:7090/Voyager",
  series =       "Transformations: studies in the history of science and
                 technology",
  acknowledgement = ack-nhfb,
  libnote =      "Not in my library.",
  subject =      "Quantum chemistry; History",
  tableofcontents = "Introduction / 1 \\
                 1. Quantum Chemistry {\em qua\/} Physics: The Promises
                 and Deadlocks of Using First Principles / 9 \\
                 2. Quantum Chemistry {\em qua\/} Chemistry: Rules and
                 More Rules / 39 \\
                 3. Quantum Chemistry {\em qua\/} Applied Mathematics:
                 Approximation Methods and Crunching Numbers / 131 \\
                 4. Quantum Chemistry qua Programming: Computers and the
                 Cultures of Quantum Chemistry / 187 \\
                 5. The Emergence of a Subdiscipline: Historiographical
                 Considerations / 245 \\
                 Notes / 263 \\
                 Bibliography / 287 \\
                 Index / 335",
}

@Book{Sabin:2017:AQCa,
  editor =       "John R. Sabin and Erkki Br{\"a}ndas",
  booktitle =    "Advances in Quantum Chemistry: {L{\"o}wdin} volume",
  title =        "Advances in Quantum Chemistry: {L{\"o}wdin} volume",
  volume =       "74",
  publisher =    pub-ELSEVIER,
  address =      pub-ELSEVIER:adr,
  pages =        "xiii + 392",
  year =         "2017",
  CODEN =        "AQCHA9",
  ISBN =         "0-12-809988-7 (hardcover), 0-12-810400-7",
  ISBN-13 =      "978-0-12-809988-9 (hardcover), 978-0-12-810400-2",
  ISSN =         "0065-3276",
  ISSN-L =       "0065-3276",
  LCCN =         "QD453 .A28 v.74 2017",
  bibdate =      "Mon Feb 13 15:54:48 2017",
  bibsource =    "https://www.math.utah.edu/pub/bibnet/authors/l/lowdin-per-olov.bib;
                 https://www.math.utah.edu/pub/tex/bib/advquantumchem.bib",
  URL =          "http://www.sciencedirect.com/science/bookseries/00653276/74",
  abstract =     "This volume celebrates the 100th anniversary of the
                 birth of Per-Olov L{\"o}wdin, who would have been 100
                 in 2016. He was appointed as the first chair in Quantum
                 Chemistry at Uppsala University in 1960, and is one of
                 the founders of the science of quantum chemistry, a
                 subdiscipline that grew out of the synthesis and
                 integration of knowledge and work in physics,
                 chemistry, biology, and applied mathematics. This
                 volume attempts to reflect the many varied
                 accomplishments of Per-Olov L{\"o}wdin. The invited
                 writers involve Per-Olov L{\"o}wdin's first recruits to
                 the new field and continue with PhD students supervised
                 in Uppsala and Florida along with international summer
                 school acolytes and collaborators. The field of quantum
                 chemistry has emerged as a subject of its own, and the
                 chapters will display the multifaceted overlaps with
                 various other fields with contributions from analytic
                 work, accurate QED perturbations, via strong
                 correlations in superconductors, time-dependent
                 approaches, partitioning techniques, photonic schemes,
                 thermodynamic conditions, and learning-memory to
                 fundamental applications in medicine.",
  acknowledgement = ack-nhfb,
}