- Springer, London, (2011)
- Springer, London, (2010)
- Springer, New York, (2011)
- Lecture Notes in Computer Science Springer, Berlin, (2011)
- Lecture Notes in Computer Science Springer, Berlin, (2011)
- Lecture Notes in Computer Science Springer, Berlin, (2011)
- Lecture Notes in Computer Science Springer, Berlin, (2011)
- Springer, New York, (2011)
- Spektrum, Heidelberg, (2012)
- Informatik-Spektrum 34(5):484--495 (October 2011)
- Informatik-Spektrum 34(5):469-483 (October 2011)
- Informatik-Spektrum 34(5):434-442 (October 2011)
- Informatik-Spektrum 34(5):462-468 (October 2011)
- Informatik-Spektrum 34(5):443-454 (October 2011)
- Springer, London, (2011)
- Lecture Notes in Artificial Intelligence Springer, Berlin, (2010)
- Lecture Notes in Computer Science Springer, Berlin, (2010)
- Personal and Ubiquitous Computing 15(3):219-220 (March 2011)
- Personal and Ubiquitous Computing 15(3):291-303 (March 2011)
- Informatik-Spektrum 34(2):120-133 (April 2011)


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