(1)
Paulino, J. F.; Afonso, J. C.; Mantovano, J. L.; Vianna, C. A.; Cunha, J. W. S. D. Recovery of Tungsten from Wolframite from the Mine of Igarapé Manteiga (Rondonia – Brazil) via Acidic Leaching. ien prog rep 2015, 92.