1. Leibniz-Institut für Wissensmedien (IWM), Tübingen, Germany
2. Know-Center GmbH & Institute for Psychology, University of Graz, Graz, Austria
3. Know-Center GmbH & Knowledge Technologies Institute, Graz University of Technology, Graz, Austria
4. Institute of Work Science, Ruhr University of Bochum, Bochum, Germany
5. FZI Research Center for Information Technologies, Karlsruhe, Germany
6. Imaginary srl, Milan, Italy
7. Department of Computer Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
8. imc information multimedia communication AG, Saarbrücken, Germany
9. Department for Psychology, University of Tübingen, Tübingen, Germany