Automata, Languages and Programming 36th Internatilonal Collogquium, ICALP 2009, Rhodes, greece, July 5-12, 2009, Proceedings, Part II - Albers, Susanne; Marchetti-Spaccamela, Alberto; Matias, Yossi; Nikoletseas, Sotiris; Thomas, Wolfgang (Springer Berlin Heidelberg, 2009)