Pike, A. W. G.; Hoffmann, D. L.; García-Diez, M.; P. B., Pettitt; Alcolea, J.; Balbín, R. De; González-Sainz, C.; Heras, C. De Las; Lasheras, J. A.; Montes, R.; Zilhão, J. (15 June 2012). "U-series dating of Paleolithic art in 11 caves in Spain". Science. 336 (6087): 1409–1413. Bibcode:2012Sci...336.1409P. doi:10.1126/science.1219957. PMID22700921. S2CID7807664.
Pike, A. W. G.; Hoffmann, D. L.; García-Diez, M.; P. B., Pettitt; Alcolea, J.; Balbín, R. De; González-Sainz, C.; Heras, C. De Las; Lasheras, J. A.; Montes, R.; Zilhão, J. (15 June 2012). "U-series dating of Paleolithic art in 11 caves in Spain". Science. 336 (6087): 1409–1413. Bibcode:2012Sci...336.1409P. doi:10.1126/science.1219957. PMID22700921. S2CID7807664.
Pike, A. W. G.; Hoffmann, D. L.; García-Diez, M.; P. B., Pettitt; Alcolea, J.; Balbín, R. De; González-Sainz, C.; Heras, C. De Las; Lasheras, J. A.; Montes, R.; Zilhão, J. (15 June 2012). "U-series dating of Paleolithic art in 11 caves in Spain". Science. 336 (6087): 1409–1413. Bibcode:2012Sci...336.1409P. doi:10.1126/science.1219957. PMID22700921. S2CID7807664.
Pike, A. W. G.; Hoffmann, D. L.; García-Diez, M.; P. B., Pettitt; Alcolea, J.; Balbín, R. De; González-Sainz, C.; Heras, C. De Las; Lasheras, J. A.; Montes, R.; Zilhão, J. (15 June 2012). "U-series dating of Paleolithic art in 11 caves in Spain". Science. 336 (6087): 1409–1413. Bibcode:2012Sci...336.1409P. doi:10.1126/science.1219957. PMID22700921. S2CID7807664.