Fuertes-Prieto, M. Natividad, Esperanza Fernández-Martínez, Fernando Gómez-Fernández, Eduardo Alonso-Herrero, Diego Herrero Alonso, and Ana Neira-Campos. 2016. “The Escalada Formation: Characterization of a Potential Chert Supply Source in the Cantabrian Mountains (NW Spain) During Prehistory.”. Journal of Lithic Studies 3 (2), 309-26. https://doi.org/10.2218/jls.v3i2.1421.