M. A. Rivas Ponce and C. Cebolla Lozano, “Sorne consideratjoas about Bromus rigidus Roth ¡a the Iberian Peninsida and Baleares”, Bot. complut., vol. 18, p. 93, Jan. 1993, Accessed: Jul. 14, 2026. Available: https://revistas.ucm.es/index.php/BOCM/article/view/BOCM9393110093A