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)
C. Cattuto, D. Benz, A. Hotho, и G. Stumme. The Semantic Web - ISWC 2008, том 5318 из Lecture Notes in Computer Science, стр. 615--631. Springer Berlin / Heidelberg, (2008)