1. G. P. Anisimova, E. L. Kapel’kina, and R. I. Semenov, Opt. Spektrosk. 86, 540 (1999) [Opt. Spectrosc. 86, 474 (1999)].
2. Ch. E. Moore, Atomic Energy Levels (National Bureau of Standards, Washington, 1949, 1952, 1958), Vols. 1–3.
3. A. P. Yutsis and A. Yu. Savukinas, Mathematical Foundations of Atomic Theory (Mintis, Vilnius, 1973).
4. G. P. Anisimova and R. I. Semenov, Opt. Spektrosk. 66, 1208 (1989) [Opt. Spectrosc. 66, 703 (1989)].
5. Ch. E. Moore, Handbook of Chemistry and Physics, Ed. by J. W. Gallagher (CRC Press, Boca Raton, 1993).