R. Agrawal, S. Gollapudi, A. Kannan, und K. Kenthapadi. Proceedings of the 20th International Conference Companion on World Wide Web, Seite 483--492. New York, NY, USA, ACM, (2011)
M. Houbraken, C. Sun, E. Smirnov, und K. Driessens. Adjunct Publication of the 25th Conference on User Modeling, Adaptation and Personalization, Seite 147--152. New York, NY, USA, ACM, (2017)
B. Bullock, H. Lerch, A. Roßnagel, A. Hotho, und G. Stumme. Proceedings of the 11th International Conference on Knowledge Management and Knowledge Technologies, Seite 15:1--15:8. New York, NY, USA, ACM, (2011)