GÓMEZ-PINILLA, I.; LARREA, M. T.; VALLE, F. J. Problematic of the Imini pyrolusites in the production of ferromanganese for metallurgical applications. Revista de Metalurgia, [S. l.], v. 34, n. Extra, p. 390–394, 1998. DOI: 10.3989/revmetalm.1998.v34.iExtra.778. Disponível em: https://revistademetalurgia.revistas.csic.es/index.php/revistademetalurgia/article/view/778. Acesso em: 20 feb. 2024.