“…A Transition system for P (TS(P) = {Stsp, Ap, T P, sP}) consists of a set of states Stsp representing the process terms, a set of labels .Ap representing actions, a transition relation T P over process terms which gives the semantics of the system, and an initial state s P. Semantics. A variety of process behavioural equivalences have been defined for deterministic and nondeterministic processes [26,33,34]. In the present work, strong bisimulation [3] is adopted to provide substitutivity of components; reuse requires substitution of processes.…”