First and Second Derivative Estimators for a Closed Queueing Network Throughput Using Perturbation Analysis Techniques

[C48]Bao, G., and Cassandras, C.G.,
First and Second Derivative Estimators for a Closed Queueing Network Throughput Using Perturbation Analysis Techniques Proc. 31st IEEE Conf. Decision and Control , pp. 3197-3202, December   1992.