1. I. I. Gikhman and A.V. Skorokhod, Introduction to the Theory of Stochastic Processes (Nauka, Moscow, 1977) [in Russian].
2. V. K. Aladinskii, Fiz. Tekh. Poluprovodn. (Leningrad) 6, 2034 (1972) [Sov. Phys. Semicond. 6, 731 (1972)].
3. I. V. Grekhov and Yu. N. Serezhkin, Avalanche Breakdown of p-n Junction in Semiconductoes (Énergiya, Leningrad, 1980) [in Russian].
4. B. S. Kondrat’ev, N. A. Sobolev, V. S. Tutygin, and M. L. Tiranov, Preprint Fiz.-Tekh. Inst. im. A. F. Ioffe 6(1252), 1 (1988).
5. V. I. Tikhonov and M. A. Mironov, Markov Processes (Svyaz’, Moscow, 1977) [in Russian].