1. Department of Management and Marketing, Faculty of Management and Economics, Tomas Bata University in Zlin, Mostni 5139, Zlin 76001, Czech Republic
2. Faculty of Applied Informatics, Tomas Bata University in Zlin, Nam. T.G.M 5555, Zlin 76001, Czech Republic
3. Department of Management Sciences, Hochschule Bonn-Rhein-Sieg University of Applied Sciences, Grantham-Allee 20, Sankt Augustin, Bonn 53757, Germany