Soto, M., Gómez de Soler, B., Vallverdú, J., & Vaquero, M. (2014). Potential siliceous sources during Prehistory: Results of prospecting in the East margin of the Ebro Basin (NE Iberian Peninsula). Journal of Lithic Studies, 1(1), 293-318. https://doi.org/10.2218/jls.v1i1.772