J. Illig, A. Hotho, R. Jäschke, und G. Stumme. Knowledge Processing and Data Analysis, Volume 6581 von Lecture Notes in Computer Science, Springer Berlin / Heidelberg, 10.1007/978-3-642-22140-8_9.(2011)
J. Mueller, S. Doerfel, M. Becker, A. Hotho, und G. Stumme. Recommender Systems and the Social Web Workshop at 7th ACM Conference on Recommender Systems, RecSys 2013, Hong Kong, China -- October 12-16, 2013. Proceedings, Seite New York, NY, USA. ACM, (2013)accepted for publication.
J. Illig, A. Hotho, R. Jäschke, und G. Stumme. Knowledge Processing and Data Analysis, Volume 6581 von Lecture Notes in Computer Science, Seite 136--149. Berlin/Heidelberg, Springer, (2011)