1. Research Unit on Governance, Competitiveness and Public Policies (GOVCOPP), Departmento de Economia, Gestao, Engenharia Industrial e Turismo (DEGEIT), University of Aveiro, 3810-193 Aveiro, Portugal
2. School of Engineering, Polytechnic of Porto (ISEP), Rua Dr. António Bernardino de Almeida, 4249-015 Porto, Portugal
3. Associate Laboratory for Energy, Transports and Aerospace (LAETA-INEGI), 4200-465 Porto, Portugal