DEL BARRIO MARTÍN, S.; MARTÍNEZ ORIO, R.; SÁNCHEZ, A. Gold production from refractory minerals in the Pyritic Belt. Boletín Geológico y Minero, [S. l.], v. 130, n. 2, p. 341–359, 2019. DOI: 10.21701/bolgeomin.130.2.007. Disponível em: https://bgm.revistas.csic.es/index.php/bgm/article/view/208. Acesso em: 3 may. 2025.