1. Hehre, W. J., Radom, L., Schleyer, P. vR., and Pople, J. A., Ab Initio Molecular Orbital Theory, Wiley-Interscience, New York, 1986.
2. Szabo, A. and Ostlund, N. S., Modem Quantum Chemistry: Introduction to Advanced Electronic Structure Theory, Macmillan, New York, 1982.
3. R. McWeeny and Craig, D. P., Methods of Molecular Quantum Mechanics, Academic Press, London, 1989.
4. Wilson, S., Electron Correlation in Molecules, Clarendon Press, Oxford, 1984.
5. Daudel, R., Leroy, G., Peeters, D. and Sana, M., Quantum Chemistry, WileyInterscience, Chichester, 1983.