1. ESTGA-Águeda School of Technology and Management, University of Aveiro, 3750-127 Águeda, Portugal
2. CIDMA–Center for Research and Development in Mathematics and Applications, University of Aveiro, 3810-193 Aveiro, Portugal
3. GOVCOPP-Research Unit on Governance, Competitiveness and Public Policies, University of Aveiro, 3810-193 Aveiro, Portugal