1. P. P. Bocharov and A. A. Pechinkin, Queuing Theory [in Russian], Izd. Ros. Univ. Druzhby Narodov, Moscow (1995).
2. G. I. Falin and J. G. C. Templeton, Retrial Queues, Chapman & Hall, London (1997).
3. G. I. Falin, “A survey on retrial queues,” Queues Systems, 5, 127–167 (1990).
4. D. Yu. Kuznetsov and A. A. Nazarov, Adaptive Networks of Random Access [in Russian], Del’taplan, Tomsk (2002).
5. S. N. Stepanov, Numerical Methods of the Analysis of Repeated Call Systems [in Russian], Nauka, Moscow (1983).