Feranec, R.S., Garcia, N., Diez, J.C., Arsuaga, J.L., 2010. Understanding the Ecology of Mammalian Carnivorans and Herbivores from Valdegoba Cave (Burgos, Northern Spain) Through Stable Isotope Analysis. Palaeogeography, Palaeoclimatology, Palaeoecology 297, 263-272. doi:10.1016/j.palaeo.2010.08.006