Rossi, M., G. Festa, and A. Gunardi. “The Evolution of Public-Private Partnerships in a Comparison Between Europe and Italy: Some Perspectives for the Energy Sector”. International Journal of Energy Economics and Policy, vol. 9, no. 3, Apr. 2019, pp. 403-1, https://www.econjournals.com/index.php/ijeep/article/view/7815.