Nyakuma, Bemgba Bevan, and Aliyu Jauro. “CHEMICAL AND PYROLYTIC THERMOGRAVIMETRIC CHARACTERIZATION OF NIGERIAN BITUMINOUS COALS”. GeoScience Engineering 62, no. 3 (October 22, 2016): 1–5. Accessed June 13, 2026. https://geoscience.cz/ojs/index.php/GSE/article/view/107.