CRUZ BLANCO, J.; DE LA TORRE PALACIOS, L.; ESPÍ RODRÍGUEZ, J. A. Financing and competitiveness in copper mining. Boletín Geológico y Minero, [S. l.], v. 130, n. 1, p. 81–98, 2019. DOI: 10.21701/bolgeomin.130.1.006. Disponível em: https://bgm.revistas.csic.es/index.php/bgm/article/view/214. Acesso em: 3 may. 2025.