G. González-Fortes, A. García-Vázquez, A. Pinto-Llona, and A. Grandal-d’Anglade, “Preservation of DNA in Pleistocene and Holocene Ursid samples from the NW of the Iberian Peninsula”, Cad Lab Xeol Laxe, vol. 39, pp. 129–139, Mar. 2017.