Sánchez JM, Guitián P, Guitián J. Reproduetive biology aud conservation of Petrocoptis grandiflora in the NW of the Iberian Península. Bot. complut. 1993;18:123. Accedido julio 13, 2026. https://revistas.ucm.es/index.php/BOCM/article/view/BOCM9393110123A