1. S. Wilson,Electron Correlation in Molecules, Clarendon Press, Oxford (1987).
2. P. F. Gruzdev,Transition Probabilities and Radiation Lifetimes of the Levels of Atoms and Ions [in Russian], Energoizdat, Moscow (1990).
3. M. Ya. Amus’ya,Atomic Photoeffect [in Russian], Nauka, Moscow (1987).
4. Z. G. Soos and S. Ramasesha,Phys. Rev.,B29, No. 10, 5410–5421(1984).
5. L. P. Rappoport, B. A. Zon, and N. L. Manakov,Theory of Many-Photon Processes in Atoms [in Russian], Nauka, Moscow (1978).