Jimenez-Islas, Donaji, Miriam Edith Perez-Romero, Ignacio Ventura Cruz, and Martha Beatriz Flores-Romero. “Development of Biofuels Research in South Africa”. International Journal of Energy Economics and Policy 11, no. 5 (August 20, 2021): 99–105. Accessed December 24, 2024. https://econjournals.com.tr/index.php/ijeep/article/view/11454.