1. GOVCOPP research unit Department of Economics, Management, Industrial Engineering and Tourism, University of Aveiro, Aveiro, Portugal
2. UI&D research unit Department of Management, Marketing and Turismo, ISLA Santarém, Santarém, Portugal
3. Faculty of Arts and Humanities, CEGOT - Centre of Studies on Geography and Spatial Planning, University of Coimbra, Coimbra, Portugal