ALI, S.; HASHIM, M.; AHMAD, A.; IQBAL, Y. Extraction of gold from boulangerite ore using sodium cyanide. Journal of the Pakistan Institute of Chemical Engineers, [S. l.], v. 47, n. 2, p. 01–07, 2020. DOI: 10.54693/piche.04721. Disponível em: http://piche.org.pk/journal/index.php/jpiche/article/view/403. Acesso em: 26 apr. 2024.