1. ISO Standard 8807, LOTOS, a formal description technique based on temporal ordering of observational behavior, 1988.
2. Communication and Concurrency;Milner,1989
3. Communicating Sequential Processes;Hoare,1989
4. About time nondeterminism and exception handling in a temporal extension of LOTOS;Courtiat,1994
5. An introduction to ET-LOTOS for the description of time-sensitive systems;Léonard;Computer Networks and ISDN Systems,1997