Cramer, Christopher J. Essentials of computational chemistry : theories and models / Christopher J. Cramer. - 2nd ed. - Hoboken, NJ : Wiley, c2004. - xx, 596 p. : ill. ; 25 cm. Includes bibliographical references and index. ISBN: 9780470091821 (pbk.) 0470091827 (pbk.) 0470091819 (cloth) Subjects--Topical Terms: Chemistry, Physical and theoretical--Data processing.Chemistry, Physical and theoretical--Mathematical models. Dewey Class. No.: 541.0285 / CRA/E