1. Yu. L. Klimontovich, Statistic Theory of Open Systems (Yanus, Moscow, 1995) [in Russian].
2. B. B. Mandelbrot and J. W. Van Ness, SLAM Rev. 10, 422 (1968).
3. A. Z. Patashinskii and V. L. Pokrovskii, Fluctuation Theory of Phase Transitions (Nauka, Moscow, 1982) [in Russian].
4. A. N. Kolmogorov, Dokl. Akad. Nauk 30(4), 299 (1941).
5. P. Bak, C. Tang, and K. Wiesenfeld, Phys. Rev. A 38(1), 364 (1988).