1. Hoare, C.A.R.: Communicating Sequential Processes. Prentice-Hall International, Englewood Cliffs (1985)
2. Roscoe, A.W.: The Theory and Practice of Concurrency. Prentice Hall, Englewood Cliffs (1998)
3. Failures-Divergences Refinement, FDR2 User Manual, Formal Systems (Europe) Ltd. (1998),
http://www.fsel.com