Jimenez-Islas, Donaji, Miriam Edith Perez-Romero, Ignacio Ventura Cruz, and Martha Beatriz Flores-Romero. 2021. “Development of Biofuels Research in South Africa”. International Journal of Energy Economics and Policy 11 (5):99-105. https://econjournals.com./index.php/ijeep/article/view/11454.