1. Unique solutions of contractions, CCS, and their HOL formalisation;Tian,2018
2. Communication and Concurrency;Milner,1989
3. Process Algebra: Equational Theories of Communicating Processes;Baeten,2010
4. The Theory and Practice of Concurrency;Roscoe,1998
5. Understanding Concurrent Systems;Roscoe,2010