Talbot, S. L. & Shields, G. F. (1996): "Phylogeography of Brown Bears (Ursus arctos) of Alaska and Paraphyly within the Ursidae". Molecular Phylogenetics and Evolution5_: 477-494. ResumoArquivado 21 de outubro de 2012 en Wayback Machine..
Talbot, S. L. & Shields, G. F. (1996): "Phylogeography of Brown Bears (Ursus arctos) of Alaska and Paraphyly within the Ursidae". Molecular Phylogenetics and Evolution5_: 477-494. ResumoArquivado 21 de outubro de 2012 en Wayback Machine..