R. Agrawal, J. Gehrke, D. Gunopulos, and P. Raghavan. Proceedings of the ACM SIGMOD Int'l Conference on Management of Data, Seattle, Washington, page 94--105. ACM Press, (June 1998)
S. Günnemann, I. Färber, and T. Seidl. Proceedings of the 18th ACM SIGKDD international conference on Knowledge discovery and data mining, page 132--140. New York, NY, USA, ACM, (2012)
R. Agrawal, J. Gehrke, D. Gunopulos, and P. Raghavan. Proceedings of the ACM SIGMOD Int'l Conference on Management of
Data, Seattle, Washington, page 94--105. ACM Press, (June 1998)