1. W. L. Smith, Regenerative stochastic processes, Proc. London Roy. Soc., 232 A (1955), pp. 6–31.
2. E. V. Morozov, A service of the regenerative input, in: Flow Control, Analysis and Modeling of Information and Computing Networks, Kuibyshev Stat. Univ. Publ., Kuibyshev, pp. 87–94. (In Russian.)
3. E. V. Morozov, Some results for time-continuous processes in the queueing system G1/G1/1 with losses from queue. I, in: News Byelorus. Acad. Sci., 2 (1983), pp. 51–55. (In Russian.)
4. R. Wolff, An upper bound for multi-channel queues, J. Appl. Probab., 17 (1977), pp. 884–888.
5. R. Wolff, Upper bounds on work in system for multichannel queues, J. Appl. Probab., 24 (1987), pp. 547–551.