1. Corresponding author: Department of Economic Policy, Università Cattolica del Sacro Cuore , Via Lodovico Necchi 5, Milan 20123, Italy . e-mail: lucrezia.fanti@unicatt.it
2. Institute of Economics, Universidade Estadual de Campinas , Rua Pitágoras 353, Campinas, SP 13083-970, Brazil . e-mail: mcper@unicamp.br
3. Institute of Economics, Scuola Superiore Sant’Anna , Piazza Martiri della Liberta’ 33, Pisa 56127, Italy . e-mail: m.virgillito@santannapisa.it