Xu, Xiaowei ; Yuruk, Nurcan ; Feng, Zhidan ; Schweiger, Thomas A. J.: SCAN: a structural clustering algorithm for networks. In: KDD '07: Proceedings of the 13th ACM SIGKDD international conference on Knowledge discovery and data mining. New York, NY, USA : ACM, 2007. - ISBN 978-1-59593-609-7, S. 824--833