K. Liu, B. Fang, und W. Zhang. Proceedings of the 19th ACM International Conference on Information and Knowledge Management, Seite 1109--1118. New York, NY, USA, ACM, (2010)
L. Wu, L. Yang, N. Yu, und X. Hua. WWW '09: Proceedings of the 18th international conference on World wide web, Seite 361--370. New York, NY, USA, ACM, (2009)
A. Plangprasopchok, und K. Lerman. WWW '09: Proceedings of the 18th international conference on World wide web, Seite 781--790. New York, NY, USA, ACM, (2009)
J. Tang, H. fung Leung, Q. Luo, D. Chen, und J. Gong. IJCAI'09: Proceedings of the 21st international jont conference on Artifical intelligence, Seite 2089--2094. San Francisco, CA, USA, Morgan Kaufmann Publishers Inc., (2009)