Many people hdped with this work. We are grateful to the many readers who read all or part of the manuscript of the second edition: K. B. Wiberg (Yale University),
George Petersson (Wesleyan University), Mike Robb (King's College, London),
Berny Schlegel and his research group (Wayne State University and Gaussian, Inc.),
Doug Fox and David Moses (Gaussian, Inc.), John Montgomery, Jim Cheeseman,
Mike Frisch and Gary Trucks (Lorentzian, Inc.), Andrew Livelsberger (York College
of PA; Rice University), Joe Ochterski and Carlos Sosa (Cray Research), and
Krishnan Raghavachari (AT&T Bell Laboratories/Lucent Technologies). We also
continue to thank the readers of the first edition of this book: Ken Fountain
(Northeast Missouri State University), Robert Higgins (Fayetteville State
University), James Lobue (Ursinus College), John Ranck (Elizabethtown College),
Aden Viste (Augustana College), Martin Head-Gordon (University of California,
Berkeley), Bill Ellis (Lorentzian, Inc.), and David Turner (Scientific Computing
Associates). Aden Viste, Michael Tsai (Univiversity of Alabama, Birmingham),
Errol Lewars (Trent University), and Ross Nobes (Molecular Simulations) provided
hdpful bug reports on the first edition. The errors that remain are our own.