1. Ramadge, P. J. and Wonham, W. M., 'Supervisory Control of a Class of Discrete Event Processes,' SIAM J. Control and Optimization, vol. 25, No. 1, pp 206-230, Jan. 1987.
2. Ramadge, P. J. and Wonham, W. M., 'The Control of Discrete Event Systems,' Proceedings of the IEEE, Vol 77, No. 1, pp 81-98, Jan. 1989.
3. Li, Y. and Wonham, W. M., 'Control of Vector Discrete-Event Systems,' IEEE Transactions on Automatic Control, Vol 38, No. 8, pp 1214-1227.
4. Brandin, B. A., Wonham, W. M. and Benhabib, B., 'Manufacturing Cell Supervisory Control - A Timed Discrete Event System,' Proc of the 1992 IEEE Int. Conference on Robotics and Automation, pp 931 - 936.
5. Ushio, T. 'Controllability and Control-invariance in discrete-event systems,' Int. J. of Control, Vol. 50, No. 2, Oct. 1989, pp 1507-1515.