1. A. I. Akhiezer and Ya. B. Fainberg, Dokl. Akad. Nauk SSSR, 69, 555 (1949).
2. D. Bohm and E. P. Gross, Phys. Rev., 75, 1864 (1949).
3. A. I. Akhiezer, I. A. Akhiezer, and R. V. Polovin, Plasma Electrodynamics [in Russian], Nauka, Moscow (1974).
4. B. B. Kadomtsev, A. B. Mikhailovskii, and A. V. Timofeev, J. Exp. Theor. Phys., 20, No. 4, 1517 (1965).
5. M. V. Kuzelev and A. A. Rukhadze, Physics-Uspekhi, 51, No. 10, 989 (2008).