Peter van Emde Boas, Frans C. A. Groen, Giuseppe F. Italiano, Jerzy R. Nawrocki, Harald Sack: SOFSEM 2013: Theory and Practice of Computer Science, 39th International Conference on Current Trends in Theory and Practice of Computer Science, Špindlerův Mlýn, Czech Republic, January 26-31, 2013. Proceedings. Lecture Notes in Computer Science 7741, Springer 2013, ISBN 978-3-642-35842-5