1. Analysis of a preemptive priority multiserver queue;Gail,1987
2. Fundamentals of Queueing Theory;Gross,1985
3. D.L. Jagerman, “Obtaining coefficients of a power series”, Unpublished note, AT&T Bell Labs., Holmdel.
4. An inversion technique for the Laplace transform;Jagerman;Bell System Tech. J.,1982
5. Priority Queues;Jaiswal,1968