PAULINO, J. F.; AFONSO, J. C.; MANTOVANO, J. L.; VIANNA, C. A.; CUNHA, J. W. S. D. Recovery of Tungsten by liquid-liquid extraction from a Wolframite concentrate after fusion with sodium hydroxide. Instituto de Engenharia Nuclear: Progress Report, [S. l.], n. 1, p. 92, 2015. Disponível em: https://revistas.ien.gov.br/index.php/ienprogressreport/article/view/46. Acesso em: 10 maio. 2024.