1. V. S. Lisitsa, Usp. Fiz. Nauk 153, 379 (1987) [Sov. Phys. Usp. 30, 927 (1987)].
2. L. A. Bureeva and V. S. Lisitsa, Perturbed Atom (IzdAT, Moscow, 1997).
3. E. U. Condon and G. H. Shortley, The Theory of Atomic Spectra (Macmillan, New York, 1935; Inostrannaya Literatura, Moscow, 1949).
4. I. I. Sobelman, Atomic Spectra and Radiative Transitions (Nauka, Moscow, 1977; Springer-Verlag, Berlin, 1979).
5. H. A. Bethe and E. E. Salpeter, Quantum Mechanics of One-and Two-Electron Atoms (Academic, New York, 1957; Fizmatgiz, Moscow, 1960).