Bocherens, H.; et al. Bears and humans in Chauvet Cave (Vallon-Pont-d’Arc, Ardeche, France): Insights from stable isotopes and radiocarbon dating of bone collagen. Journal of Human Evolution. 2006, 50 (3): 370–376. PMID 16442587. doi:10.1016/j.jhevol.2005.12.002.
Bocherens, H.; et al. Bears and humans in Chauvet Cave (Vallon-Pont-d’Arc, Ardeche, France): Insights from stable isotopes and radiocarbon dating of bone collagen. Journal of Human Evolution. 2006, 50 (3): 370–376. PMID 16442587. doi:10.1016/j.jhevol.2005.12.002.