Gómez Ortiz, A., B. Milheiro Santos, and D. Serrano Giné. “Snows, Ices and Waters in the Sierra Nevada Landscapes : The Interest of the Graphic Documentation from Ancient Books”. Cuadernos De Investigación Geográfica, vol. 34, June 2013, pp. 101-18, doi:10.18172/cig.1209.