T. Zhang, R. Ramakrishnan, and M. Livny. Proceedings of the 1996 ACM SIGMOD International Conference on Management of Data, page 103--114. New York, NY, USA, ACM, (1996)
T. Zhang, R. Ramakrishnan, and M. Livny. Proceedings of the 1996 ACM SIGMOD International Conference on Management of Data (SIGMOD'96), page 103--114. (1996)