S. Handschuh, S. Staab, und R. Volz. WWW '03: Proceedings of the 12th international conference on World Wide Web, Seite 431--438. New York, NY, USA, ACM, (2003)
K. Möller, T. Heath, S. Handschuh, und J. Domingue. Proceedings of the Sixth International Semantic Web Conference, (ISWC
2007), Busan, Korea, Busan, South Korea, (November 2007)