Leeuwen, J. van.SOFSEM 2007 : theory and practice of computer science : 33rd Conference on Current Trends in Theory and Practice of Computer Science, Harrachov, Czech Republic, January 20-26, 2007 : proceedings /.Springer,,c2007..
SOFSEM 2007 : theory and practice of computer science : 33rd Conference on Current Trends in Theory and Practice of Computer Science, Harrachov, Czech Republic, January 20-26, 2007 : proceedings /
