García Romero, A. and Muñoz Jiménez, J. 2013. Recent changes in snow cover and evolution of supratimberline vegetation in the Puerto de los Neveros, Guadarrama Mountains (Spain). Cuadernos de Investigación Geográfica. 36, 2 (Jun. 2013), 109–144. DOI:https://doi.org/10.18172/cig.1241.