B. Parsia, E. Sirin, и A. Kalyanpur. WWW '05: Proceedings of the 14th international conference on World Wide Web, стр. 633--640. New York, NY, USA, ACM Press, (2005)
G. Flouris, D. Plexousakis, и G. Antoniou. In Proc. of the 10th International Workshop on Non-Monotonic Reasoning 2004 (NMR-04), стр. 171-179. Westin Whistler Resort and Spa, Whistler BC, Canada, (июня 2004)