Affiliation: | 1. University of Ljubljana, Faculty of Mathematics and Physics, Jadranska 19, SI-1001, Ljubljana, Slovenia;2. LIAFA, CNRS and Université Paris Diderot – Paris 7, Case 7014, F-75205, Paris Cedex 13, France;3. IMAPP, Radboud University Nijmegen, P.O. Box 9010, 6500 GL Nijmegen, The Netherlands;4. University of Ljubljana, Faculty of Computer and Information Science, Tr?aška cesta 25, SI-1001, Ljubljana, Slovenia |