LOPEZ DE HEREDIA, U.; ROBLEDO-ARNUNCIO, J. J.; FUENTES-UTRILLA, P.; VALBUENA-CARABAÑA, M.; GIL, L. Contrasting genetic diversity of tree species in Spain: from Tertiary relicts to domestication. Forest Systems, v. 14, n. 3, p. 318-333, 1 Dec. 2005.