This work was carried out in collaboration with:
- Dr. Marco Battaglini, professor in the Department of Economics at Cornell University, United States, and researcher at the Einaudi Institute for Economics and Finance (EIEF), Italy.
- Dr. Eleonora Patacchini, professor in the Department of Economics at Cornell University, United States, and researcher at the EIEF, Italy, and the Centre for Economic Policy Research (CEPR), United Kingdom.