SOFSEM 2010: Theory and Practice of Computer Science : 36th Conference on Current Trends in Theory and Practice of Computer Science, .pindleruv Mlýn, Czech Republic, January 23-29, 2010. Proceedings - Jan Leeuwen, Anca Muscholl, David Peleg, Jaroslav Pokorný, Bernhard Rumpe ((Lecture Notes in Computer Science))