1. University of Nebraska - Omaha, College of Information Science and Technology, USA and Management Center Innsbruck, Management, Communication and IT,Innsbruck , Austria
2. Management Center Innsbruck, Management, Communication and IT, Innsbruck, Austria
3. Wirtschaftsuniversität Wien, Institute for Cognition and Behavior, Vienna, Austria
4. University of Nebraska - Omaha, College of Information Science and Technology, Omaha, Nebraska, USA