TENIOLA, O.S.; IBITOYE, S.A.; ADELEKE, A.A. Multistage Mineral Acid Leaching De-Mineralization of a Medium Caking Coal. Ife Journal of Technology, [S. l.], v. 24, n. 1, p. 6–10, 2016. Disponível em: http://ijt.oauife.edu.ng/index.php/ijt/article/view/17. Acesso em: 11 oct. 2025.