1. H. F. Schaefer III,The Electronic Structure of Atoms and Molecules, Addison-Wesley Publishing Co., Reading, Mass. (1972).
2. L. C. Snyder and H. Basch, Molecular Wave Functions and Properties, John Wiley and Sons, New York (1972).
3. W. G. Richards, T. E. H. Walker, and R. K. Hinkley, A Bibliography of Ab Initio Molecular Wave Function, Oxford University Press, London (1972).
4. F. E. Harris, Quantum chemistry, Annu. Rev. Phys. Chem. 23, 415–438 (1972); also previous reviews referenced therein.
5. C. C. J. Roothaan, New developments in molecular orbital theory, Rev. Mod. Phys. 23,69 (1951).