J. Illig, A. Hotho, R. Jäschke, и G. Stumme. Knowledge Processing and Data Analysis, том 6581 из Lecture Notes in Computer Science, стр. 136--149. Berlin/Heidelberg, Springer, (2011)
J. Mueller, S. Doerfel, M. Becker, A. Hotho, и 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, 1066, Aachen, Germany, CEUR-WS, (2013)
Y. Song, L. Zhang, и C. Giles. CIKM '08: Proceeding of the 17th ACM conference on Information and knowledge mining, стр. 93--102. New York, NY, USA, ACM, (2008)
P. Heymann, D. Ramage, и H. Garcia-Molina. SIGIR '08: Proceedings of the 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, стр. 531--538. New York, NY, USA, ACM, (2008)