1. A. V. Skorokhod, “Limit theorems for stochastic processes,” Theory of Probability and its Applications, 1, No. 3, 261–290 (1956).
2. B. V. Gnedenko and I. N. Kovalenko, An Introduction to Queuing Theory [in Russian], KomKniga, Moscow (2005).
3. A. V. Skorokhod, Random Processes with Independent Increments [in Russian], Nauka, Moscow (1964).
4. Ye. A. Lebedev, “Multichannel stochastic networks under critical load conditions,” Cybern. Syst. Analysis, 41, No. 1, 148–156 (2005).
5. V. V. Anisimov and E. A. Lebedev, Stochastic Queuing Networks. Markov Models [in Russian], Lybid’, Kyiv (1992).