T. Eiter, B. Glimm, Y. Kazakov, M. Krötzsch:
"Informal Proceedings of the 26th International Workshop on Description Logics";
in series "CEUR Workshop Proceedings", series editor: M. Jeusfeld; CEUR-WS.org, 2013, ISSN: 1613-0073.
http://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.dl2013/Vol-1014.zip