Carlos Martín-Vide Alexandru Mateescu Victor Mitrana Parallel Finite Automata Systems Communicating by States. 733-749 2002 13 Int. J. Found. Comput. Sci. 5 http://dx.doi.org/10.1142/S0129054102001424 db/journals/ijfcs/ijfcs13.html#Martin-VideMM02