Salvo Tierra, Ángel Enrique, José C. Báez, y Antonio Flores-Moya. «The historical biogeography and conservation value of taxonomic distinctness: The case of ferns flora of the Gibraltar Arc». Botanica Complutensis 45 (abril 14, 2021): e75454. Accedido julio 28, 2026. https://revistas.ucm.es/index.php/BOCM/article/view/75454.