SOFSEM 2005: Theory and Practice of Computer Science - VojtÃ¡Å¡, Peter; BielikovÃ¡, MÃ¡ria; Charron-Bost, Bernadette; Kanade, Takeo; SÃ½kora, Ondrej; Charon-Bost; SÃ½kora, Ondrej; VojtÃ¡s, Peter (Liptovský Ján, Slovakia Springer Berlin / Heidelberg, 2005)