1. Human-Computer Interaction/ Wilhelm-Schickard-Institute, University of Tübingen, Germany
2. Human - Computer Interaction Group, University of Tübingen, Germany
3. Computer Engineering and Networks Laboratory, ETH Zurich, Switzerland
4. Methods of Plasticity Reasearch, University of Zurich, Switzerland
5. University of Texas at San Antonio, United States
6. University of Tubingen, Germany
7. Adobe Research, United States