1. I. Adler and P. Naor, “Social optimization versus self-optimization in waiting lines, ” Tech. Rpt. No. 4, De- partment of Operations Research, Stanford University (1974).
2. K. Balachandran and M. Schaefer, “Class dominance characteristics at a service facility,” Econometrica 47, 515–519 (1979).
3. R. Bellman, Dynamic Programming. Princeton: Princeton University Press (1957).
4. B. Bengtsson, “On some control problems for queues,” Linkøping Studies in Science and Technology, Dissertation No. 87, Department of Electrical Engineering, Linkøping University, Sweden (1982).
5. D. Bertsekas, Dynamic Programming and Stochastic Control. New York: Academic Press (1976).