D.  Carral, Feier, C., Grau, B. Cuenca, Hitzler, P., and Horrocks, I., ?EL-ifying Ontologies?, in Automated Reasoning - 7th International Joint Conference, IJCAR 2014, Held as Part of the Vienna Summer of Logic, {VSL} 2014, Vienna, Austria, July 19-22, 2014. Proceedings, 2014, pp. 464?479.