Herrero de Egaña, Alfonso, José Vivancos, and Ángel García-Cortés. “Impact Analysis and Update to 2018 of the Economic and Social Value of the MAGNA Plan (geological Mapping at 1:50,000 Scale)”. Boletín Geológico y Minero 131, no. 4 (December 30, 2020): 817–829. Accessed May 3, 2025. https://bgm.revistas.csic.es/index.php/bgm/article/view/106.