A. Doan, R. Ramakrishnan, and S. Vaithyanathan. SIGMOD '06: Proceedings of the 2006 ACM SIGMOD international conference on Management of data, page 799--800. New York, NY, USA, ACM Press, (2006)
D. Maier, D. Rozenshtein, S. Salveter, J. Stein, and D. Warren. SIGMOD '82: Proceedings of the 1982 ACM SIGMOD international conference on Management of data, page 51--60. New York, NY, USA, ACM Press, (1982)
B. Wellner, A. Mccallum, F. Peng, and M. Hay. AUAI '04: Proceedings of the 20th conference on Uncertainty in artificial intelligence, page 593--601. Arlington, Virginia, United States, AUAI Press, (2004)
F. Suchanek, G. Ifrim, and G. Weikum. KDD '06: Proceedings of the 12th ACM SIGKDD international conference on Knowledge discovery and data mining, page 712--717. New York, NY, USA, ACM Press, (2006)
Z. Nie, Y. Ma, S. Shi, J. Wen, and W. Ma. WWW '07: Proceedings of the 16th international conference on World Wide Web, page 81--90. New York, NY, USA, ACM, (2007)