- IEEE Intelligent Systems 24(6):83-89 (2009)
- Computer 44(9):51-58 (2011)
- Computer 44(9):73-79 (2011)
- HMD -- Praxis der Wirtschaftsinformatik dpunkt, Heidelberg, (2011)
- Addison-Wesley, Boston, MA, (2002)
- Communications of the ACM (June 2011)
- Journal of Intelligent Information Systems 36(2):131-166 (April 2011)
- User Modeling and User-Adapted Interaction 21(3):285-331 (August 2011)
- Journal of Computer Science and Technology (March 2011)
- Applied Intelligence 35(2):242-259 (October 2011)
- Morgan Kaufmann, Amsterdam, 3. edition, (2011)
- Wiley, Chichester, UK, (2010)
- Communications of the ACM 54(1):86–95 (January 2011)
- Multimedia Tools and Applications 51(1):35-76 (January 2011)
- O'Reilly, Beijing, (2007)
- IEEE Intelligent Systems 25(2):48-59 (2010)
- Ubiquitous Intelligence and Computing: 6th International Conference, UIC 2009, Brisbane, Australia, (2009)
- Information Systems 33(4-5):385-406 (2008)
- User Modeling, Adaptation, and Personalization, (2009)
- Semantic Web 1(1-2):137-141 (2010)


user