1. See e.g., Shavitt, I.: In Schaefer III, H. F. (ed.) Methods of molecular electronic structure theory. New York: Plenum 1977
2. Bauschlicher jr, C. W.: In: Dykstra, C. E. (ed.) Vectorization of advanced methods of electronic structure calculation. New York: Reidel 1984
3. Almlöf, J.: The MOLECULE Program System. University of Stockholm Institute of Theoretical Physics Report 74-29, 1974
4. Davidson, E. R.: J. Chem. Phys., 62, 400 (1975)
5. Takada, T., Sasaki, F.: Int. J. Quantum Chem., 18, 1157 (1980)