BENEDICT, J.; NASIR, M. M.; NDIKILAR, C. E.; MOSES, G.; GAIMA, D. K.; DANKAWU, M. Characterization of some Nigerian coal for effective power generation and industrial utility. Dutse Journal of Pure and Applied Sciences, [S. l.], v. 8, n. 1b, p. 117–125, 2022. DOI: 10.4314/dujopas.v8i1b.14. Disponível em: https://www.ajol.info/index.php/dujopas/article/view/224829. Acesso em: 12 oct. 2026.