1. Department of Economics, Koszalin University of Technology, Kwiatkowskiego 6E, 75-343 Koszalin, Poland
2. Institute of Enterprise, Collegium of Business Administration, Warsaw School of Economics, Madalińskiego 6/8, 02-554 Warszawa, Poland
3. Department of Management and Marketing, Faculty of Agrobioengineering, University of Life Sciences in Lublin, 20-950 Lublin, Poland
4. Department of Landscape Studies and Spatial Management, Faculty of Agrobioengineering, University of Life Sciences in Lublin, Akademicka 15, 20-950 Lublin, Poland