Vargas, Pablo, and Bernardo García. “Plant Endemics to Sierra De Gredos (central Spain): Taxonomic, Distributional, and Evolutionary Aspects”. Anales del Jardín Botánico de Madrid 65, no. 2 (December 30, 2008): 353–366. Accessed April 25, 2024. https://rjb.revistas.csic.es/index.php/rjb/article/view/298.