1. Department of Law, University of Palermo; Piazza Bologni 8 - Palermo (Italy), CeLEG LUISS Guido Carli and RCEA
2. Department of Economic Studies, “G. d'Annunzio” University; Viale Pindaro 42 - Pescara (Italy)
3. Department of Economic Studies, “G. d'Annunzio” University; Viale Pindaro 42 - Pescara (Italy), and CRENoS