Reinoso Franco, Juan, Juan Rodríguez Oubiña, and Mª del Carmen Viera Benitez. “Precisions on the ecology and chorology of Schistostega pennata (Hedw.) Webb & Mohr. in the Iberian Peninsula”. Lazaroa, vol. 14, vol. 14, 1994, p. 13, https://revistas.ucm.es/index.php/LAZA/article/view/LAZA9494120013A.