Álvarez Alonso, David, and María de Andrés Herrero. “The Influence of the ‘threshing board’ Sites on the Meseta Palaeolithic Record. An Ethnoarchaeological Approach”. Complutum 22, no. 1 (September 19, 2011): 177–191. https://doi.org/10.5209/rev_CMPL.2011.v22.n1.10.