Blas Cortina, M. A. de, & Suarez Fernandez, M. (2010). Unprecedented tools of animal origin in the prehistoric copper mines of La Profunda (León) and their C14 dating (AMS). Zephyrvs, 64, 5–18. Retrieved from https://revistas.usal.es/uno/index.php/0514-7336/article/view/7205