@inproceedings{Palamidessi:01:CP, title = " A Temporal Concurrent Constraint Programming Calculus", author = "Catuscia Palamidessi and Frank Valencia", booktitle= "Proc. of the 7th International Conference on Principles and Practice of Constraint Programming", publisher = "LNCS, Springer-Verlag", editor = "Toby Walsh", year = "2001", pages = "302--316", volume = "2239", }