TY - BOOK AU - Christoffersen,Ralph E. TI - Basic principles and techniques of molecular quantum mechanics T2 - Springer advanced texts in chemistry SN - 0387967591 AV - QD462 .C495 1989 PY - 1989///] CY - New York PB - Springer-Verlag KW - Quantum chemistry N1 - Includes bibliographical references (pages [659]-675) ER -