Multiconfiguration Hartree-Fock results with Breit-Pauli corrections for forbidden transitions in the configuration
Charlotte Froese Fischer and H. P. Saha
Phys. Rev. A 28, 3169 (1983) - Published 1 December, 1983
Perturbation theory in for atoms: First-order pair functions in an -separated Hylleraas basis set
H. M. Schmidt and H. v. Hirschhausen
Phys. Rev. A 28, 3179 (1983) - Published 1 December, 1983
Direct determination of effective Hamiltonians by wave-operator methods. I. General formalism
Philippe Durand
Phys. Rev. A 28, 3184 (1983) - Published 1 December, 1983
Direct determination of effective Hamiltonians by wave-operator methods. II. Application to effective-spin interactions in -electron systems
D. Maynau, Ph. Durand, J. P. Daudey, and J. P. Malrieu
Phys. Rev. A 28, 3193 (1983) - Published 1 December, 1983