1. V. S. Imshennik, Yad. Fiz. 65, 2138 (2002) [Phys. At. Nucl. 65, 2077 (2002)].
2. V. S. Imshennik and D. K. Nadezhin, Itogi Nauki Tekh., Ser.: Astron. 21, 63 (1982); V. S. Imshennik and D. K. Nadyozhin, Sov. Sci. Rev., Sect. E 2, 75 (1983).
3. L. D. Landau and E. M. Lifshitz, Statistical Physics, 3rd ed. (Nauka, Moscow, 1976; Pergamon Press, Oxford, 1980), Part 1.
4. K. A. Postnov, Usp. Fiz. Nauk 169, 545 (1999) [Phys. Usp. 42, 469 (1999)].
5. S. I. Blinnikov, Surv. High Energy Phys. 15, 37 (2000).