1. http://theory.stanford.edu/~rvg/process.html
2. Milner, R.: Communication and Concurrency. Prentice Hall, Englewood Cliffs (1989)
3. Hoare, C.A.R.: Communicating Sequential Processes. Prentice Hall, Englewood Cliffs (1985)
4. Baeten, J.C.M., Weijland, W.P.: Process Algebra. Cambridge University Press, Cambridge (1990)
5. http://theory.stanford.edu/~rvg/