F. Sáiz and A. R. Burgaz Moreno, “Phenologieal study of cereal sieeds communities from lierra de l>inares (Valladolid, Spain)”, Bot. complut., vol. 15, p. 127, Jan. 1989, Accessed: Jul. 15, 2026. Available: https://revistas.ucm.es/index.php/BOCM/article/view/BOCM8989220127A