Arnáiz, C., and J. Loidi. “Key for the Species of the Genus Rosa (Rosaceae) Which Occur in the Communities of Pruno-Rubion Ulmifolii in the Iberian Peninsula”. Lazaroa, vol. 4, Feb. 2014, pp. 201-6, https://revistas.ucm.es/index.php/LAZA/article/view/44530.