Programming Languages and Systems 9th European Symposium on Programming, ESOP 2000 Held as Part of the Joint European Conferences on Theory and Practice of Software, ETAPS 2000 Berlin, Germany, March 25- April 2, 2000 Proceedings - Smolka, Gert; Smolka, Gert (Springer Berlin Heidelberg : Imprint: Springer, 2000)