1. School of Economics, University of Algarve, 8005-139 Faro, Portugal
2. Business and Economic School, Instituto Superior de Gestão, Av. Mal. Craveiro Lopes 2A, 1700-284 Lisbon, Portugal
3. CEG-IST, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais 1, 1040-001 Lisbon, Portugal
4. Centre for Local Government, UNE School of Business, University of New England, Armidale, NSW 2350, Australia
5. CEFAGE, Faculdade de Economia, Universidade do Algarve, Campus of Gambelas, 8005-139 Faro, Portugal
6. CERIS, Instituto Superior Técnico, University of Lisbon, 1040-001 Lisboa, Portugal