.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 : proceedings /.,.
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 : proceedings /