Lopez de Heredia, U., J. J. Robledo-Arnuncio, P. Fuentes-Utrilla, M. Valbuena-Carabaña, and L. Gil. 2005. “Contrasting Genetic Diversity of Tree Species in Spain: From Tertiary Relicts to Domestication”. Forest Systems 14 (3), 318-33. https://doi.org/10.5424/srf/2005143-00922.