1. Magnasco V, McWeeny R (1991) Theoretical models of chemical bonding, Part 4. Springer, Berlin In: Maksic ZB (ed.) pp 133–169
2. Stone AJ (2002) The theory of intermolecular forces. Clarendon Press, Oxford
3. Bendazzoli GL (2003) Fundamental world of quantum chemistry, vol. I Kluwer, Dordrecht In: Brändas EJ, Kryachko ES (eds.) pp 657–674
4. Casimir HBG, Polder D (1948). Phys Rev 73:360–372
5. Kutzelnigg W, Maeder F (1978). Chim Phys 32:451–455