Towards Comprehensive Support for the Dynamic Analysis of Petri Net Based Models. - Rudolf K. Keller; Marianne Ozkan; Xijin Shen (Application and Theory of Petri Nets, 1994)

Environment Support for Business Reengineering: The Macrotec Approach. - Rudolf K. Keller; Xijin Shen; Richard Lajoie; Marianne Ozkan; Tao Tao (Softw. Concepts Tools, 1995)