Franz Baader, Oliver Fernandez Gil, Barbara Morawska. Hybrid EL-Unification is NP-complete. In Thomas Eiter, Birte Glimm, Yevgeny Kazakov, Markus Krötzsch, editors, Informal Proceedings of the 26th International Workshop on Description Logics, Ulm, Germany, July 23 - 26, 2013. Volume 1014 of CEUR Workshop Proceedings, pages 29-40, CEUR-WS.org, 2013. [doi]
Abstract is missing.