T. Wittmann, and J. Ruhland. DaWaK '99: Proceedings of the First International Conference on Data Warehousing and Knowledge Discovery, page 359--368. London, UK, Springer-Verlag, (1999)
V. Sheng, F. Provost, and P. Ipeirotis. KDD '08: Proceeding of the 14th ACM SIGKDD international conference on Knowledge discovery and data mining, page 614--622. New York, NY, USA, ACM, (2008)isbn = 978-1-60558-193-4,
location = Las Vegas, Nevada, USA,
doi = http://doi.acm.org/10.1145/1401890.1401965,.
R. Srikant, Q. Vu, and R. Agrawal. Proceedings of the Third International Conference of Knowledge Discovery and Data Mining, page 67--73. Menlo Park, California, AAAI Press, (1997)