1. Microsoft Research, Cambridge, United Kingdom
2. TU Darmstadt, Darmstadt, Germany
3. Fraunhofer IGD, Darmstadt, Germany
4. Fraunhofer IGD & TU Darmstadt, Darmstadt, Germany
5. TU Dortmund, Dortmund, Germany
6. WINLAB, Rutgers University, New Brunswick, NJ, USA