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