1. Notes on algebraic calculi of processes;Boudol;Logics and Models of Concurrent Systems,1985
2. Calculabilité et expressivité dans l'algébre de processus MEIJE;de Simone;Thése de 3eme Cycle,1984
3. A calculus of Communicating Systems;Milner,1980
4. A structural approach to operational semantics;Plotkin,1981