1. Dipartimento di Economia e Diritto, Università di Roma “La Sapienza” , Rome, Italy
2. AQR-IREA, Universitat de Barcelona , Barcelona, Spain
3. University of Roma Tre , Italy
4. INPS-DCSR , Italy
5. IZA , Germany
6. OFCE Sciences-Po , France
7. SKEMA Business School, University Côte d'Azur GREDEG , France
8. Department of Environmental Science and Policy, University of Milan , Italy
9. Fondazione Eni Enrico Mattei (FEEM) , Italy