1. For a review of the CI method see Shavitt, I. in Modern Theoretical Chemistry, III, Methods of Electronic Structure Theory (H. F. Schaefer III, Ed.), New York; Plenum, 1977. Many landmark papers on the CI method are reviewed in H. F. Schaefer III, Quantum Chemistry, Clarendon, Oxford 1984
2. It is not sufficient that the basis is complete with respect to an ordinary Hilbert space norm, but with respect to some Soboliev norm, the so-called convergence in energy space, as discussed by Klahn, B., Bingel, W. A.: Theoret. Chim. Acta (Berl.) 44, 9, 27 (1977)
3. Kutzelnigg, W.: Theoret. Chim. Acta 1, 327 343 (1963); Ahlrichs, R., Kutzelnigg, W.: J. Chem. Phys. 48, 1819 (1968)
4. Edmiston, C., Krauss, M.: J. Chem. Phys. 45, 1833 (1966)
5. For reviews see Meyer, W.: in Modern Theoretical Chemistry III, Methods of Electronic Structure Theory (H. F. Schaefer, III Ed., New York: Plenum 1977 and Kutzelnigg, W. ibidem