Vila-Viçosa, C. M., Vázquez, F. M., Meireles, C. and Pinto-Gómes, C. (2014): “Taxonomic peculiarities of marcescent oaks (Quercus, Fagaceae) In southern Portugal”, Lazaroa, 35, pp. 139–153. doi: https://doi.org/10.5209/rev_LAZA.2014.v35.42555.