1. Determination of precise structural information, paper presented at the International School of Crystallography, Erice, Trapani, Sicily 24 May-6 June 1985.
2. in Modern Theoretical Chemistry, Ed. (Plenum Press, N. Y., 1977), Vol. 4, pg. 1.
3. and Molecular Mechanics, (ACS Monograph 177, Washington, 1978).
4. in Topics in Current Chemistry, (Springer Verlag, Berlin, 1973), Vol. 42, pg. 1.
5. Fourth International Congress on Quantum Chemistry, Uppsala, Sweden 14-19 June 1982.