Robustness Properties of Perturbation Analysis Estimators for Discrete Event Systems with Unknown Distributions

[C36]Cassandras, C.G., Gong, W-B., and Lee, J.I.,
Robustness Properties of Perturbation Analysis Estimators for Discrete Event Systems with Unknown Distributions Proc. 29th IEEE Conf. Decision and Control , pp. 2855-2856, December   1990.