1. Bialystok University of Technology, Faculty of Engineering Management, Wiejska 45A, 15-001 Białystok , Poland
2. Institute for Sustainable Technologies - NRI, Kazimierza Pułaskiego 6/10, 26-600 Radom , Poland
3. Corvinus University of Budapest, Faculty of Business Administration, Institute of Business Economics, Department of Decision Sciences, Budapest , Hungary