D’Adamo, Idiano, Massimo Gastaldi, and Paolo Rosa. “Assessing Environmental and Energetic Indexes in 27 European Countries”. International Journal of Energy Economics and Policy 11, no. 3 (April 10, 2021): 417–423. Accessed December 24, 2024. https://econjournals.com.tr/index.php/ijeep/article/view/11169.