M. Bilenko, S. Basu, and R. Mooney. ICML '04: Proceedings of the twenty-first international conference on Machine learning, New York, NY, USA, ACM Press, (2004)
C. Brooks, and N. Montanez. WWW '06: Proceedings of the 15th international conference on World Wide Web, page 625-632. New York, NY, USA, ACM Press, (2006)
M. Grahl, A. Hotho, and G. Stumme. Workshop Proceedings of Lernen - Wissensentdeckung - Adaptivität (LWA 2007), page 50-54. Martin-Luther-Universität Halle-Wittenberg, (September 2007)
M. Hearst, and J. Pedersen. SIGIR '96: Proceedings of the 19th annual international ACM SIGIR conference on Research and development in information retrieval, page 76--84. New York, NY, USA, ACM, (1996)
S. Staab, and A. Hotho. Intelligent Information Processing and Web Mining, Proceedings of the International IIS: IIPWM'03 Conference held in Zakopane, page 451-452. (2003)
Y. Zhao, and G. Karypis. Proceedings of the Eleventh International Conference
on Information and Knowledge Management (CIKM-02), page 515--524. New York, ACM Press, (2002)