1. Quantum Theory of Polymers as Solids (Plenum, New York, 1988).
2. Lecture Notes;Pisani,1988
3. and in Modern Techniques in Computational Chemistry (MOTECC), Ed. ESCOM, Leiden, (1991), Chap. 18.
4. XXXXXX
5. and CRYSTAL92User's Manual (Torino & Daresbury, 1992).