1. Atkins P., “Physical Chemistry”, 5th Edition, W.H. Freeman & Company, New-York (1994).
2. Chabanel M., Gressier P., “Liaison chimique et Spectroscopie”, Marketing Ed., Paris (1991)
3. Jorgensen W.L., Salem L., “The Organic Chemistry Book of Orbitals”, Academic Press, NewYork (1973).
4. Stillinger F.H., Science 209 (1980) 4455.
5. Jolivet J.P., Henry M., and Livage J., “De la solution à l’oxyde”, InterEditions/ CNRS Editions, Paris (1994)