D. Cai, X. He, Z. Li, W. Ma, und J. Wen. Proceedings of the 12th annual ACM international conference on Multimedia - MULTIMEDIA \textquotesingle04, ACM Press, (2004)
H. Zeng, Q. He, Z. Chen, W. Ma, und J. Ma. Proceedings of the 27th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Seite 210--217. New York, NY, USA, ACM, (2004)
Y. Liu, B. Gao, T. Liu, Y. Zhang, Z. Ma, S. He, und H. Li. Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval, Seite 451--458. New York, NY, USA, ACM, (2008)
C. Liu, H. Yang, J. Fan, L. He, und Y. Wang. Proceedings of the 19th international conference on World wide web, Seite 681--690. New York, NY, USA, ACM, (2010)