D. Cai, Z. Shao, X. He, X. Yan, und J. Han. LinkKDD '05: Proceedings of the 3rd international workshop on Link discovery, Seite 58--65. New York, NY, USA, ACM, (2005)
G. Feng, T. Liu, Y. Wang, Y. Bao, Z. Ma, X. Zhang, und W. Ma. SIGIR '06: Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval, Seite 75--82. New York, NY, USA, ACM Press, (2006)