1. Brave, Y., and Heymann, M. 1990. On optimal attraction of discrete-event processes, Center for Intelligent Systems Report 9010, Technion, Haifa, Israel.
2. Chung, S.L., Lafortune, S., and Lin, F. 1992a. Limited lookahead policies in supervisory control of discrete event systems.IEEE Trans. Automat. Control, 37(12):1921?1935.
3. Chung, S.L., Lafortune, S., and Lin, F. 1992b. Supervisory control using variable lookahead policies, Technical Report CGR-92-9, College of Engineering Control Group Reports, University of Michigan.
4. Kumar, P.R., and Varaiya, P. 1986.Stochastic Systems. Estimation, Identification, and Adaptive Control. Prentice-Hall: Englewood Cliffs, NJ.
5. Kumar, R., and Garg, V. 1991. Optimal control of discrete event dynamical systems using network flow techniques, Preprint, Department of Electrical and Computer Engineering, University of Texas, Austin.