1. School of Technology and Management, CARME, Polytechnic Institute of Leiria, Campus 2, Morro Do Lena, Alto Do Vieiro 2411-901 Leiria, Portugal
2. CARME, Polytechnic Institute of Leiria, Campus 2, Morro Do Lena, Alto Do Vieiro 2411-901 Leiria, Portugal
3. Department of Social, Political and Territorial Sciences & GOVCOPP (Research Unit on Governance, Competitiveness and Public Policies), University of Aveiro, Campos Universit??rio de Santiago, 3810-193 Aveiro, Portugal