Automata, languages and programming 35th International Colloquium, ICALP 2008 Reykjavik, Iceland, July 7-11,2008 :proceedings, Part II - Ivan Damgard, Luca Aceto; Goldberg, Leslie Ann; Halldorsson, Magnus M.; Igor Walukiewicz, Anna Ingolfsdottir (Lecture notes in computer science, 2008)