1. H. Bruneel and B.G. Kim,Discrete-time Models for Communications Systems Including ATM (Kluwer Academic, Boston, 1993).
2. J.J. Hunter,Mathematical Techniques of Applied Probability, Vol. 1:Discrete Time Models: Basic Theory, Vol. 2:Discrete Time Models: Techniques and Applications (Academic Press, New York, 1983).
3. F.P. Kelly,Reversibility and Stochastic Networks (Wiley, New York, 1979).
4. T. Meisling, Discrete-time queueing theory, Oper. Res. 6 (1958) 96?105.
5. H. Takagi,Queueing Analysis: A Foundation of Performance Evaluation, Vol. 3:Discrete-Time Systems (Elsevier, Amsterdam, 1993).