First- and second-derivative estimators for cyclic closed-queueing networks. - Gang Bao 005; Christos G. Cassandras; Michael A. Zazanis (IEEE Trans. Autom. Control., 1996)

First and Second Derivative Estimators for Closed Jackson-Like Queueing Networks Using Perturbation Analysis Techniques. - Gang Bao 005; Christos G. Cassandras; Michael A. Zazanis (Discret. Event Dyn. Syst., 1997)