| 2009.1 | ContextKing: Virtual Kingdoms in Real Life | 
|  | Format: | Paper (PDF, 2368521 bytes) ; | 
|  | Author(s): | Johan Koolwaaij, Martin Wibbels, Sebastian Böhm & Marko Luther (2009) | 
 |  | Reference: | Proceedings of the first IEEE International Conference in Games and Virtual Worlds, pp. 61-67, March 23 - 24, 2009, Coventry, UK | 
 |  | Keywords: | Context awareness | 
| 2009.2 | Living virtual history: A mobile game around the world | 
|  | Format: | Paper (PDF, 930310 bytes) ; | 
|  | Author(s): | Johan Koolwaaij, Martin Wibbels, Sebastian Böhm & Marko Luther (2009) | 
 |  | Reference: | The Visual Computer, Springer Berlin / Heidelberg, Issue Volume 25, Number 12, pp. 1055-1062, December 2009 | 
 |  | Keywords: | Context awareness |