van Loevezijn, Gerard. “Stratigraphic Architecture of the Gordón Member, and Its Paleogeographic Implications (Frasnian, Cantabrian Mountains, Spain)”. Boletín Geológico y Minero 135, no. 2 (June 30, 2024): 002. Accessed May 2, 2025. https://bgm.revistas.csic.es/index.php/bgm/article/view/354.