García Gómez, Enrique, Arturo Ruiz Taboada, and Juan Pereira Sieso. “Knocking down Acorns: The Survival of Prehistoric Harvesting Technique in the Mediterranean Fores”. Complutum 31, no. 1 (October 29, 2020): 159–176. https://doi.org/10.5209/cmpl.71654.