1. Garey, M.R. and Johnson, D.S., Computers and Intractability: A guide to the Theory of NP-Completeness, Freeman, San Francisco, 1979.
2. Wiberg, K.B. and Boyd, R.H., J. Am. Chem. Soc., 94 (1972) 8426.
3. Lipton, M. and Still, W.C., J. Comput. Chem., 9 (1988) 343.
4. Griewank, A.O., J. Opt. Theor. Appl., 34 (1981) 11.
5. A recent monograph on Molecular Dynamics and Monte Carlo techniques is: Allen, M.P. and Tildesley, D.J., Computer Simulation of Liquids, Clarendon, Oxford, 1987.