1. Department of Public Finance, University of Innsbruck, Innsbruck, Austria
2. Department of Geography, Umeå University, Umeå, Sweden
3. Andorra Research and Innovation Institute, Andorra la Vella, Andorra
4. Sustainability Institute, Universitat Politècnica de Catalunya, Barcelona, Spain
5. University of Lausanne, Institute of Geography and Sustainability, Interdisciplinary Centre for Mountain Research, Lausanne, Switzerland
6. Université Savoie Mont Blanc, Edytem, France