[1] H. A. David: Order Statistics. Wiley, New York 1970. MR 0286226 | Zbl 0223.62057

[2] R. K. Deb, R. F. Serfozo: Optimal control of batch service queues. Adv. Appl. Prob. 5 (1973), 340-361. MR 0341657 | Zbl 0264.60066

[3] A. Federgruen A. Hordijk, H. C. Tijms: Denumerable state semi-Markov decision processes with unbounded costs, average cost criterion. Stoch. Proc. Appl. 9 (1979), 223-235. MR 0548842

[4] H. Mine, V. Makiš: Optimal operating policies for a stochastic clearing system with bounded waiting times. Memoirs of the Faculty of Engineering, Kyoto University 46 (1984), 1-6. MR 0792444

[5] V. Makiš: Optimal control characteristics of a queueing system with batch services. Kybernetika 21 (1985), 3, 197-212. MR 0806725

[6] S. M. Ross: Applied Probability Models with Optimization Applications. Holden-Day, San Francisco 1970. MR 0264792 | Zbl 0213.19101

[7] H. J. Weiss: The computation of optimal control limits for a queue with batch services. Management Sci. 25 (1979), 320-328. MR 0543385 | Zbl 0426.90032

[8] H. J. Weiss: Further results on an infinite capacity shuttle with control at a single terminal. Operations Res. 29 (1981), 1212-1217. Zbl 0474.90039

[9] A. A. Yushkevich: On the semi-Markov controlled models with the average reward criterion. Teorija Verojat. i Primenen. 26 (1981), 808-815. MR 0636774 | Zbl 0478.60091