1. Baker D.J., Moncrieff, D., Saunders, V.R., and Wilson, S., 1989, Comput. Phys. Commun (to be submitted)
2. Bartlett, R.J., Kucharski, S.A., Noga, J., Watts, J.D., and Trucks, G.W., 1989, Many—Body Methods in Quantum Chemistry, Lecture Notes in Chemistry 52 125, ed. U. Kaldor, ( Springer, Berlin )
3. Brueckner, K.A., 1955, Phys. Rev. 100 36.
4. Càrsky, P., and Urban, M., 1980, Ab initio Calculations. Methods and Applications in Chemistry ( Springer, Berlin )
5. Goldstone, J., 1957, Proc. Roy. Soc. (London) A 239 267