1. Lisbon Accounting and Business School, Instituto Politécnico de Lisboa, 1069-035 Lisbon, Portugal
2. Centro de Administração e Políticas Públicas, 1300-663 Lisbon, Portugal
3. Higher Institute of Social and Political Sciences, University of Lisbon, 1300-663 Lisbon, Portugal
4. Instituto Jurídico Portucalense, Universidade Portucalense, 4200-072 Porto, Portugal