1. Polytechnic Institute of Bragança, University of Salamanca, 37007 Salamanca, Spain
2. Department of Social Sciences and Management, Center of Global Studies, Aberta University, 1269-001 Lisboa, Portugal
3. Competitiveness and Public Policies (GOVCOPP), School of Technology and Management Agueda (ESTGA), University of Aveiro, 3750-127 Águeda, Portugal
4. Department of Social Sciences and Communication, Salamanca University, 37007 Salamanca, Spain
5. Polytechnic Institute of Cávado and Ave (IPCA), UNIAG and CiTUR, 4750-810 Barcelos, Portugal