A. Park, R. Quadari, und H. Tsang. 2017 8th IEEE Annual Information Technology, Electronics and Mobile Communication Conference (IEMCON), Seite 680-684. (Oktober 2017)
M. Aurnhammer, P. Hanappe, und L. Steels. 5th International Semantic Web Conference, ISWC 2006, Athens, GA, USA, Volume 4273 von Lecture Notes in Computer Science, Seite 58--71. Springer-Verlag, (5-9 nov 2006)