Regeneration and Networks of Queues 87 The book is aimed at formatIsbn:Softcover 9781493953370 The book is aimed at graduate school students as well as junior and senior undergraduate students and postdoctoral fellows muss man sich mit solchen behelfen Discrete event simulation is often the only available means for studying the behavior of complex networks and many such simulations are non Markovian in the sense that the underlying stochastic process cannot be repre sented as a continuous time Markov chain with countable state space These difficulties arise primarily from the inherent variability in a stochastic system