1. S. Iso, K. Mori, and M. Namiki, in: Proc. Intern. Conf. on Cosmic Rays, Vol. 1 [in Russian], Nauka (1960), p. 230.
2. E. L. Feinberg, Tr. Fiz. Inst. Akad. Nauk SSSR,29, 155 (1965).
3. D. N. Zubarev, Nonequilibrium Statistical Thermodynamics, Plenum, New York (1974).
4. D. N. Zubarev, Dokl. Akad. Nauk SSSR,164, 65 (1965).
5. A. V. Prozorkevich and S. A. Smolyanskii, Teor. Mat. Fiz.,31, 118 (1977).