1. and , ‘μSystem reference manual, version 4.1’, Technical Report CS-89–31, Department of Computer Science, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1, July 1989.
2. Software Seri;Kernighan,1988
3. Adding concurrency to a statically type-safe object-oriented programming language
4. Proceedings of the ACM SIGPLAN Workshop on Object-Based Concurrent Programming, San Diego, California, U.S.A., 26–27 September 1988.
5. Coroutines: A Programming Methodology, a Language Design and an Implementation, Lecture Notes in Computer Science, Vol. 95, and (eds), Springer-Verlag, 1980.