Satellite Workshops Proceedings of the 28th International Colloquium on Automata, Languages, and Programming Crete, Greece, July 2001 - Baresi, Luciano; Mayr, Richard; Taentzer, Gabriele; Levy, Jean - Jacques; Pezze, Mauro; Ζαρολιάγκης, Χρήστος (Elsevier Science B.V., 2001)