1. University Savoie-Mont-Blanc, CNRS, Edytem, Le Bourget du Lac, France;
2. Department of Strategic Management, Marketing and Tourism, SME and Tourism, University of Innsbruck, Innsbruck, Austria
3. Institute of Geography, University of Göttingen, Göttingen, Germany
4. Interdisciplinary Centre for Mountain Research (CIRM), University of Lausanne, Bramois, Switzerland