1. Biberstein O, Buchs D. Concurrency and object-orientation with structured algebraic nets.IS-CORE workshop, Evry: September 1995, 73–75
2. Biberstein O, Buchs D. An Object Oriented Specification Language based on Hierarchical Algebraic Petri Nets. In: Agha G, Cindio F eds.Proc. of workshop on Object-Oriented Programming and Models of concurrency. Italy: 1995, 131–145
3. Lakos C. The Object Orientation of Object Petri Nets. In: Agha G, Cindio F eds.Proceedings of Workshop on Object-Orientation and Models of Concurrency, Int’l Conference on Application and Theory of Petri nets, Italy: June, 1995
4. Matsuoka S, Wakita K, Yonezawa A. Inheritance Anomaly in Object-Oriented Concurrent Programming Languages. In: Agha G, Wegner P, Yonezawa A eds.Research Directions in Concurrent Object-Oriented Programming. Cambridge MA: MIT Press, 1993
5. Holvoet T, Verbaeten P. PN-TOX: a Paradigm and Development Environment for Object Concurrency Specifications. In: Agha G, Cindio F eds.Proceedings of Workshop on Object-Orientation and Models of Concurrency, Int’l Conference on Application and Theory of Petri Nets. Italy: June, 1995