1. Carsky, P., and Urban, M.: 1980 Ab Initio Calculations: Methods and Applications in Chemistry, Springer-Verlag, Berlin, pp. 1–241.
2. Del Re, G., Berthier, G., and Serre, J.: 1980 Electronic States of Molecules and Atom Clusters: Foundations and Prospects of Semiempirical Methods, Springer-Verlag, Berlin, pp. 1–177.
3. Douglas, B. E., and Hollingsworth, C. A.: 1985 Symmetry in Bonding and Spectra, Academic Press, Orlando, Fl, pp. 1–253.
4. Hinchliffe, A.: 1988 Computational Quantum Chemistry, John Wiley & Sons, Inc., New York, pp. 1–112.
5. Lowe, J. P.: 1978 Quantum Chemistry, Academic Press, New York, pp. 135–571.