Fernández, Francisco José, Javier Escuder-Viruete, and Francisco González Lodeiro. “Presentation”. Boletín Geológico y Minero 128, no. 3 (September 30, 2017): 511–512. Accessed May 3, 2025. https://bgm.revistas.csic.es/index.php/bgm/article/view/226.