1. R. Righini: Physica 131B, 234 (1985).
2. G. Stuart Pawley: J. Molecular Structure 130, 17 (1985).
3. J. Vicens, C. Decoret, C. Gaget, M. C. Etter, L. A. Errede: Mol. Cryst. Liq. Cryst. 96, 39 (1983).
4. J. Vicens, C. Decoret, M. C. Etter and J. Royer: Israel J. Chem. 25, 306 (1985).
5. A. J. Pertsin and A. I. Kitaigorodsky: The Atom -Atom Potential Method in Physics and Chemistry of Organic Solids ,Springer Verlag (1986).