Knapp, M., Rohland, N., Weinstock, J., Baryshnikov, G. F., Sher, A., Nagel, D., Rabeder, G., Pinhasi, R., Schmidt, H. A., & Hofreiter, M. (2009). First DNA sequences from Asian cave bear fossils reveal deep divergences and complex phylogeographic patterns. Molecular Ecology, 18(6), 1225-1238. doi:10.1111/j.1365-294X.2009.04088.x.