González Hidalgo, J. C., M. T. Echeverría, and F. Pellicer. 2013. “Space Variations of the Sediment Texture in Hillslopes of Different Aspect in Semiarid Environment (Aragon)”. Cuadernos De Investigación Geográfica 20 (May). Logroño, SPA:7-22. https://doi.org/10.18172/cig.1006.