1. University of Vigo, Faculty of Business Sciences and Tourism, Ourense, Spain; INESC TEC, Porto, Portugal
2. University of Vigo, Faculty of Business Sciences and Tourism, Ourense, Spain
3. Centre for Transdisciplinary Development Studies, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
4. INESC TEC, Porto, Portugal; University of Trás-os-Montes e Alto Douro (UTAD),
Vila Real, Portugal