1. Baeten, J. and Bergstra, J. (1992). Process algebras with signals and conditions. In Broy, M., editor, Programming and Mathematical Method, volume 88 of NATO ASI Series, Series F: Computer and System Sciences, pages 273–324. Springer.
2. Berry, G. and Gonthier, G. (1988). The esterel synchronous programming language: Design, semantics, implementation. Research Report 842, INRIA.
3. Booch, G. (1991). Object Oriented Design with Applications. Benjamin Cummings, Redwood City, CA.
4. Booch, G., Rumbaugh, J., and Jacobson, I. (1997). The unified modeling language for object-oriented development, version 1.0. Technical report, RATIONAL Software Cooperation.
5. Broy, M. (1991). Towards a formal foundation of the specification and description language SDL. Formal Aspects of Computing, 3:21–57.