user- Recommender Systems for the Social Web, volume 32 of Intelligent Systems Reference Library, Springer, Berlin/Heidelberg, (2012)
- AI Communications 21(4):231-247 (2008)
- AIRWeb '07: Proc. of the 3rd int. workshop on Adversarial inf. retrieval on the web, page 57--64. (2007)
- Proceedings of the International Conference on Advances in Social Network Analysis and Mining, (2009)to be published at The 2009 International Conference on Advances in Social Networks Analysis and Mining ASONAM .
- Workshop Proceedings of Lernen -- Wissensentdeckung -- Adaptivität LWA 2007, page 50-54. Martin-Luther-Universität Halle-Wittenberg, (September 2007)
- Proc. of the Fourth International Workshop on Adversarial Information Retrieval on the Web, (2008)
- Advances in Information Retrieval, 30th European Conference on IR Research, ECIR 2008, volume 4956 of LNAI, page 101-113. Heidelberg, Springer, (2008)
- page 26-38. Oldenbourg Verlag, München, (2008)
- Proc. of the ICCS 2006 Conceptual Structures Tool Interoperability Workshop, (2006)to appear .
- CHI '06: Proceedings of the SIGCHI conference on Human Factors in computing systems, page 111--120. New York, NY, USA, ACM Press, (2006)
- Workshop Proceedings of Lernen - Wissensentdeckung - Adaptivität LWA 2007, page 13-20. Martin-Luther-Universität Halle-Wittenberg, (September 2007)
- Proceedings of the 15th International Conference on Conceptual Structures ICCS 2007, volume 4604 of Lecture Notes in Artificial Intelligence, page 283--295. Berlin, Heidelberg, Springer-Verlag, (July 2007)
- Proceedings of the First Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures, page 87-102. Aalborg, Aalborg Universitetsforlag, (2006)
- D-Lib Magazine (April 2005)
- D-Lib Magazine (April 2005)
