Ravi, Some of theses books and articles might be useful to You: REVIEWS IN COMPUTATIONAL CHEMISTRY by D.B. Boyd and K.B. Lipkowitz (Vol. 1+2), VCH Publishers, Inc. A HANDBOOK OF COMPUTATIONAL CHEMISTRY by Tim Clark, John Wiley And Sons 1985 PROTEIN ARCHITECTURE by A. M. Lesk, Oxford University Press 1991 COMPUTER AIDED MOLECULAR MODELING: RESEARCH STUDY OR RESEARCH TOOL by A. Dearing, J. Comput.-Aided Mol. Design, 2, 179-189 (1988) Peter Reinert