1. Apache tuscany project, http://incubator.apache.org/tuscany/
2. The concurrency workbench, http://homepages.inf.ed.ac.uk/perdita/cwb/
3. Service component architecture, http://www.osoa.org/display/Main/Home
4. Back, R.J.R., von Eright, J.: Refinement Calculus: A Systematic Introduction. In: Graduate Texts in Computer Science, Springer, Heidelberg (1998)
5. Chandy, K., Misra, J.: Parallel Program Design: A Foundation. Addison-Wesley, Reading (1988)