SOFSEM 2008: Theory and Practice of Computer Science 34th Conference on Current Trends in Theory and Practice of Computer Science, Nový Smokovec, Slovakia, January 19-25, 2008. Proceedings - Geffert, Viliam; Karhumäki, Juhani; Bertoni, Alberto; Preneel, Bart; Návrat, Pavol; Bieliková, Mária (Springer Berlin Heidelberg, 2008)