Nyakuma, Bemgba Bevan, and Aliyu Jauro. “PHYSICOCHEMICAL CHARACTERIZATION AND THERMAL DECOMPOSITION OF GARIN MAIGANGA COAL”. GeoScience Engineering 62, no. 3 (October 23, 2016): 6–11. Accessed June 3, 2023. http://geoscience.cz/ojs/index.php/GSE/article/view/116.