1. The Life and Works of A. K. Erlang;Brockmeyer,1948
2. A computer control queueing system and the optimal access cycle;Chan,1969
3. Cyclic queues with feedbacks;Finch;J. Roy. Statist. Soc., Ser. B,1959
4. Probability and its Engineering Uses;Fry,1928
5. The priority problem and a time-shared processor;Greenberger;Nav. Res. Logist. Quart.,1966