M. d. P. Rodriguez-Rojo, D. Sánchez-Mata, S. Rivas-Martínez, and M. G. Barbour, “Syntaxonomical approach for classification of the Californian serpentine annual grasslands”, Lazaroa, vol. 22, pp. 83–94, Jan. 2001, Accessed: Nov. 23, 2024. Available: https://revistas.ucm.es/index.php/LAZA/article/view/LAZA0101110083A