1. Department of Agricultural Economics, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
2. Department of Supply Chain Management, International Hellenic University, 60100 Katerini, Greece
3. Department of Regional and Cross Border Development, University of Western Macedonia, 50100 Kozani, Greece
4. Department of Forestry and Natural Environment Management, Agricultural University of Athens, 36100 Karpenisi, Greece