[1
] Department of Public Finance, University of Innsbruck, Innsbruck, Austria
[2
] Institute of Geography, University of Innsbruck, Innsbruck, Austria
[3
] Department of Geography & Environmental Management, University of Waterloo, Waterloo,
Canada
[4
] Observatori de la Sostenibilitat d’Andorra, Sant Julià de Lòria, Andorra
[5
] Vestlandsforsking, Sogndal, Norway