Alban Ponse Chris Verhoef Bas van Vlijmen Algebra of Communicating Processes - Preface to the Special Issue. 285-286 1997 177 Theor. Comput. Sci. 2 db/journals/tcs/tcs177.html#PonseVV97 http://dx.doi.org/10.1016/S0304-3975(96)00249-6