1. Department of Public Management, Institute of Public Policy and Administration, College of Public Economy and Administration, Krakow University of Economics, ul. Rakowicka 27, 31-510 Krakow, Poland
2. NWU Business School, North-West University, Potchefstroom 2531, South Africa
3. Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, Al. Powstancow Warszawy 12, 35-959 Rzeszow, Poland