1. Pratt, V. R. Modeling concurrency with partial orders. Int. J. of Parallel Programming, 1986. 15(1): p. 33–71.
2. RAPIDE, Rapide 1.0 Pattern Language Reference Manual. Stanford University, Stanford, 1997.
3. Luckham, D. C. and Frasca, B., Complex Event Processing in Distributed Systems. Computer Systems Laboratory Technical Report CSL-TR-98-754. Stanford University, Stanford, 1998.
4. Santoro, A., et al., eJava–Extending Java with Causality. In Proceedings of 10th International Conference on Software Engineering and Knowledge Engineering (SEKE’98). 1998. Redwood City, CA, USA.
5. Fidge, C. J., Timestamps in message-passing systems that preserve the partial ordering. Australian Computer Science Communications, 1988. 10(1): p. 55–66.