Pérez-Díaz, S.; López-Sáez, J. A.; Ruiz-Alonso, M.; Zapata, L.; Abel Schaad, D. Holocene history of Taxus baccata in the Basque Mountains (Northern Iberian Peninsula). Lazaroa 2013, 34, 29-41. https://doi.org/10.5209/rev_LAZA.2013.v34.n1.41933.