1. Department of Regional Geography and Territorial Planning, Faculty of Geography, Babeş-Bolyai University, Clinicilor St. 5–7, 400006 Cluj-Napoca, Romania
2. Mountain Economy Center, “Costin C. Kirițescu” National Institute for Economic Research, Romanian Academy, Petreni St. 49, 725700 Vatra Dornei, Romania
3. Department of Geography, West University of Timişoara, Vasile Parvan Bv. no. 4, 300223 Timişoara, Romania