Automata, Languages and Programming : 35th International Colloquium, ICALP 2008 Reykjavik, Iceland, July 7-11, 2008, Proceedings, Part II - Luca Aceto, Ivan Damgård, Leslie Ann Goldberg, Magnús M. Halldórsson, Anna Ingólfsdóttir, Igor Walukiewicz ((Lecture Notes in Computer Science))