« Evaluating the Geochemical Properties of Awhum Coal and Its Potential for Sustainable Energy Generation and Optimization in Nigeria ». Lafia Journal of Scientific and Industrial Research 3, no. 1 (avril 29, 2025): 123–128. Consulté le mai 17, 2026. https://lafiascijournals.org.ng/index.php/ljsir/article/view/432.