Polytechnic University of Milan, Polytechnic University of Milan, Polytechnic University of Milan, University of Florence, Eurac Research, University of Florence, Polytechnic University of Milan, University of Naples Federico II, affiliation not provided to SSRN, University of Florence, Eurac Research, Polytechnic University of Milan, Polytechnic University of Milan, University of Naples Federico II, United Nations University, Polytechnic University of Milan, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Florence, Eurac Research, affiliation not provided to SSRN, Polytechnic University of Milan and Polytechnic University of Milan