Institution: | 1. University of Perugia, Department of Economics, Via Alessandro Pascoli 20, 06123 Perugia, Italy;2. Italian Institute of Statistics (ISTAT) and University of Rome La Sapienza, Department of Economics and Law, Via Cesare Balbo 16, 00184 Rome, Italy;3. University of Macerata, Department of Economics and Law, Via Crescimbeni 20, 62100 Macerata, Italy |