JAFAR, Nurliah; WAHID, Hendra; WIDODO, Sri. Classification of Ni Levels for Determination Cut-Off Grade in Region X. Journal of Geology and Exploration, [S. l.], v. 1, n. 1, p. 1–7, 2022. DOI: 10.58227/jge.v1i1.3. Disponível em: https://ejournal.insightpublisher.com/index.php/JGE/article/view/3. Acesso em: 11 feb. 2026.