CSPS

["Toward Comprehensive Specification of Distributed Systems", G. Roman et al, Proc 7th Intl Conf on Distrib Comp Sys, IEEE 1987, pp. 282-289].

CSP-S

["Implementation of CSP-S for Description of Distributed Algorithms", L. Patniak et al, Comput Lang 9(3):193-202 (1984)].