Sirag, Abdalla, Mohammed Alnour, and Mohammed Gebrail. “Growth and the Environment in Sudan: Myth or Reality of the EKC Hypothesis?”. International Journal of Energy Economics and Policy 15, no. 6 (October 12, 2025): 571–582. Accessed December 5, 2025. https://www.econjournals.com/index.php/ijeep/article/view/21218.