J. Leskovec, L. Backstrom, und J. Kleinberg. KDD '09: Proceedings of the 15th ACM SIGKDD international conference on Knowledge discovery and data mining, Seite 497--506. New York, NY, USA, ACM, (2009)
D. Oberle, B. Berendt, A. Hotho, und J. Gonzalez. Advances in Web Intelligence, First International Atlantic Web Intelligence Conference, AWIC 2003, Madrid, Spain, May 5-6, 2003, Proceedings, Volume 2663 von Lecture Notes in Artificial Intelligence, Seite 142-154. Springer, (2003)