1. Algebra of communicating processes with abstraction;Bergstra;Theoret. Comput. Sci.,1985
2. On the semantics of concurrency: partial orders and transition systems;Boudol,1987
3. Permutation of transitions: an event structure semantics for CCS and SCCS;Boudol,1989
4. Bisimulations for concurrency;Castellani,1988
5. Distributed bisimulations;Castellani;J. ACM,1989