1. University of Siegen, Germany and
University of Siegen, Germany
2. Applied Social Science, TH Köln, Germany and
Applied Social Science, TH Köln, Germany
3. Stockholm University, Sweden and
Stockholm University, Sweden
4. Information Systems and New Media, University of Siegen, Germany and
Information Systems and New Media, University of Siegen, Germany
5. Institute of Information Systems and New Media, University of Siegen, Germany and
Institute of Information Systems and New Media, University of Siegen, Germany