García Ruiz, J. M., and B. L. Valero Garcés. 2013. “Historical Geomorphological Processes and Its Relationship to the Human Activity in Central Pyrenees (spain)”. Cuadernos De Investigación Geográfica 22 (May). Logroño, SPA:33-56. https://doi.org/10.18172/cig.1041.