Teniola, O.S., S.A. Ibitoye, and A.A. Adeleke. “Multistage Mineral Acid Leaching De-Mineralization of a Medium Caking Coal”. Ife Journal of Technology 24, no. 1 (May 1, 2016): 6–10. Accessed October 11, 2025. http://ijt.oauife.edu.ng/index.php/ijt/article/view/17.