1. McLean, A. D., and M. Yoshimine: IBM Res. Develop. 12, 206 (1968).
2. Bishop, D. M.: Advances in Quantum Chemistry, edited by P. O. L�wdin. New York: Academic Press 1967.
3. Huzinaga, S.: J. chem. Physics 42, 1293 (1965).
4. Clementi, E., and D. R. Davis: J. computational Physics 2, 223 (1967).
5. ?: IBM Res. Develop. 9, 1 (1965).