- Springer, London, (2011)
- Proceedings of the 16th international conference on Intelligent user interfaces, page 461. (2011)
- Springer, New York, (2011)
- Springer, New York, (2011)
- Springer, London, (2011)
- Computer 44(5):46-52 (2011)
- Communications of the ACM 54(2):60-71 (February 2011)
- Informatik-Spektrum 34(2):120-133 (April 2011)
- Springer, Berlin, (2011)
- Artificial Intelligence Review 35(4):319-338 (April 2011)
- Informatik-Spektrum 34(2):165-177 (April 2011)
- Informatik-Spektrum 34(2):143-152 (April 2011)
- Personal and Ubiquitous Computing 15(4):409-418 (April 2011)
- Personal and Ubiquitous Computing 15(3):221-233 (March 2011)
- Personal and Ubiquitous Computing 15(4):399-408 (April 2011)
- Journal of Intelligent Information Systems 36(2):167-195 (April 2011)
- Multimedia Tools and Applications 54(1):97-120 (April 2011)
- IUI '11: Proceedings of the 15th International Conference on Intelligent User Interfaces, Palo Alto, CA, USA, page 327-330. (2011)
- New York, ACM, (2007)
- New York, ACM, (2006)


user