Level Crossings in Point Processes Applied to Queues: Single-Server Case. - P. H. Brill; Morton J. M. Posner (Oper. Res., 1977)

The System Point Method in Exponential Queues: A Level Crossing Approach. - P. H. Brill; Morton J. M. Posner (Math. Oper. Res., 1981)