Peter van Emde Boas, Jaroslav Pokorný, Mária Bieliková, Julius Stuller: SOFSEM 2004: Theory and Practice of Computer Science, 30th Conference on Current Trends in Theory and Practice of Computer Science, Merin, Czech Republic, January 24-30, 2004. Lecture Notes in Computer Science 2932, Springer 2004, ISBN 3-540-20779-1