MPHANZA, Victor; NKONDE, Glasswell Kayula; PHIRI, Tinah; MULWANDA, James. Test Works on Concentrate Grade Improvement using Mineral Depressants. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 26, n. 3, p. 60–65, 2016. Disponível em: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/5223. Acesso em: 18 dec. 2025.