1. S. A. Kazantsev, N. Ya. Polynovskaya, L. N. Pyatnitskii, and S. A. Édel'man, Usp. Fiz. Nauk,156, No. 1, 3–46 (1988).
2. A. A. Ivanov, Physics of Strongly Nonuniform Plasma [in Russian], Atomizdat, Moscow (1977).
3. A. G. Petrashen', V. N. Rebane, and T. K. Rebane, Zh. Éksp. Teor. Fiz.,87, No. 1, 147–159 (1984).
4. K. Blum, Density Matrix Theory and Application, Plenum Press, New York (1981).
5. M. P. Chaika, Interference of Degenerate Atomic States [in Russian], State University, Leningrad (1975).