1. Baader, F., Horrocks, I., Sattler, U.: Description logics. In: van Harmelen, F., Lifschitz, V., Porter, B. (eds.) Handbook of Knowledge Representation, pp. 135–179. Elsevier (2007)
2. Baader, F.: What’s new in description logics. Informatik-Spektrum 34(5), 434–442 (2011)
3. Bobillo, F., Delgado, M., Gomez-Romero, J., Straccia, U.: Joining gödel and zadeh fuzzy logics in fuzzy description logics. International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 20(4), 475–508 (2012)
4. Glimm, B., Lutz, C., Horrocks, I., Sattler, U.: Answering conjunctive queries in the
$\mathcal{SHIQ}$
description logic. In: Veloso, M. (ed.) Proceedings of the Twentieth International Joint Conference on Artificial Intelligence (IJCAI 2007), pp. 299–404. AAAI Press (2007)
5. Hitzler, P., Krötzsch, M., Parsia, B., Patel-Schneider, P.F., Rudolph, S. (eds.): OWL 2 Web Ontology Language: Primer. W3C (2009)