1. Department of Management, University of Social Sciences, 90-113 Lodz, Poland
2. Department of Management and Social Communication, Institute of Public Affairs, Jagiellonian University, 31-007 Cracow, Poland
3. IT Institute, University of Social Sciences, 90-113 Lodz, Poland
4. Department of Management, WSB University, 41-300 Dabrowa Gornicza, Poland