X. Dong, and A. Halevy. SIGMOD '07: Proceedings of the 2007 ACM SIGMOD international conference on Management of data, page 43--54. New York, NY, USA, ACM, (2007)
A. Doan, J. Madhavan, P. Domingos, and A. Halevy. WWW '02: Proceedings of the 11th international conference on World Wide Web, page 662--673. New York, NY, USA, ACM, (2002)