Castillo, Miguel, and Esperanza Muñoz-Salinas. “Assessing the Impact of Quaternary Glaciations on the Topography of Sierra De Gredos (central Spain)”. Revista Mexicana de Ciencias Geológicas 30, no. 2 (January 13, 2014). Accessed April 16, 2025. https://rmcg.geociencias.unam.mx/index.php/rmcg/article/view/118.