Jan Kratochvíl, Jan Arne Telle, Marek Tesar. Computational Complexity of Covering Three-Vertex Multigraphs. In Erzsébet Csuhaj-Varjú, Martin Dietzfelbinger, Zoltán Ésik, editors, Mathematical Foundations of Computer Science 2014 - 39th International Symposium, MFCS 2014, Budapest, Hungary, August 25-29, 2014. Proceedings, Part II. Volume 8635 of Lecture Notes in Computer Science, pages 493-504, Springer, 2014. [doi]
Abstract is missing.