R. Wetzker, C. Zimmermann, C. Bauckhage, and S. Albayrak. WSDM '10: Proceedings of the Third ACM International Conference on Web Search and Data Mining, page 71--80. New York, NY, USA, ACM, (2010)
J. Teevan, S. Dumais, and E. Horvitz. SIGIR '05: Proceedings of the 28th annual international ACM SIGIR conference on Research and development in information retrieval, page 449--456. New York, NY, USA, ACM Press, (2005)
X. Shen, B. Tan, and C. Zhai. CIKM '05: Proceedings of the 14th ACM international conference on Information and knowledge management, page 824--831. New York, NY, USA, ACM Press, (2005)
K. Sugiyama, K. Hatano, and M. Yoshikawa. WWW '04: Proceedings of the 13th international conference on World Wide Web, page 675--684. New York, NY, USA, ACM Press, (2004)
R. Jäschke, B. Krause, A. Hotho, and G. Stumme. Proceedings of the Second International Conference on Weblogs and Social Media (ICWSM 2008), page 192--193. Menlo Park, CA, USA, AAAI Press, (2008)
A. Hotho, R. Jaeschke, C. Schmitz, and G. Stumme. The Semantic Web: Research and Applications, volume 4011 of Lecture Notes in Computer Science, page 411-426. Heidelberg, Springer, (June 2006)