1. Ahmed Ben, S., M. Moalla, M. Courvoisier, and R. Valette(1991). “Flexible manufacturing production system modelling using object Petri nets and their analysis,” IMACS Symposium MCTS, Lille, France, pp. 553–560.
2. Amar, S., E. Craye, and J-C. Gentina (1992). “A method for hierarchical specification and prototyping of flexible manufacturing systems”, in Proc. IEEE Workshop on Emerging Technologies and Factory Automation, Melbourne, Australia, pp. 44–59.
3. AT&T (1989). Flexible Work station: User Guide and Manual, Version 1.01.
4. Banaszak, Z. A. and B. H. Krogh (1990). “Deadlock avoidance in flexible manufacturing systems with concurrency competing process flows,” IEEE Trans. Robotics and Automation, 6(6), pp. 724–734.
5. Bastide, R., C. Silbertin-Blanc (1991). “Modelling of flexible manufacturing system by means of cooperative objects,” in Computer Applications in Production and Engineering, Doumeingts G., et. el. (Eds.), Elsevier Science, pp. 593–600.