LUKOMONA, C.; MWALULA, J.; WITIKA, L. The beneficiation of mumbwa phosphate deposit by various techniques. African Journal of Science and Technology, [S. l.], v. 6, n. 2, 2010. DOI: 10.4314/ajst.v6i2.55182. Disponível em: https://www.ajol.info/index.php/ajst/article/view/55182. Acesso em: 1 aug. 2026.