1. Department of Economics, Agricultural Extension and Education, Islamic Azad University, Tehran, Iran
2. Faculty of Agricultural Sciences and Food-Skopje, Ss. Cyril and Methodius University in Skopje, Skopje, North Macedonia
3. Institute of Agricultural and Environmental Sciences, Chair of Rural Economics, Estonian University of Life Sciences, Tartu, Estonia
4. Department of Economics and Rural Development, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
5. Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
6. Department of Geography, Ghent University, Ghent, Belgium