University of Perugia, University of Camerino, affiliation not provided to SSRN, Politecnico di Torino, University of Ferrara, Sapienza University of Rome, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Perugia, University of Perugia, University of Perugia, University of Camerino, affiliation not provided to SSRN, affiliation not provided to SSRN, Independent, Polytechnic University of Turin and London South Bank University