A. Hotho, R. Jäschke, C. Schmitz, и G. Stumme. The Semantic Web: Research and Applications, том 4011 из Lecture Notes in Computer Science, глава 31, Springer Berlin / Heidelberg, Berlin, Heidelberg, (2006)
B. Krause, R. Jäschke, A. Hotho, и G. Stumme. HT '08: Proceedings of the nineteenth ACM conference on Hypertext and hypermedia, стр. 157--166. New York, NY, USA, ACM, (2008)
B. Krause, R. Jäschke, A. Hotho, и G. Stumme. HT '08: Proceedings of the nineteenth ACM conference on Hypertext and hypermedia, стр. 157--166. New York, NY, USA, ACM, (2008)