Romano, Antonio Angelo, Giuseppe Scandurra, and Alfonso Carfora. 2016. “Estimating the Impact of Feed-in Tariff Adoption: Similarities and Divergences Among Countries through a Propensity-Score Matching Method”. International Journal of Energy Economics and Policy 6 (2):144-51. https://econjournals.com./index.php/ijeep/article/view/1480.