1. Three-Dimensional Molecular Modeling and Drug Design
2. 3. W. J. Hehre, W. A. Lathan, R. Ditchfield, M. D. Newton, J. A. Pople, J. S. Binkley, R. A. Whiteside, R. Krishnan, R. Seeger, D. J. Defrees, H. B. Schlegel, S. Topiol, L. R. Kahn, and J. A. Pople. 1973 . Gaussian 70, Program 236. Quantum Chemistry Program Exchange ; 1973 . Gaussian 80, Program 406. Ibid.