C. Wang, und D. Blei. Proceedings of the 17th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, Seite 448--456. New York, NY, USA, ACM, (2011)
J. Tang, und J. Zhang. Advances in Knowledge Discovery and Data Mining, Volume 5476 von Lecture Notes in Computer Science, Springer, Berlin/Heidelberg, (2009)