Wilhelm Hemprich, Christian Ehrenberg: Symbolae physicae, seu, Icones et descriptiones corporum naturalium novorum aut minus cognitorum : quae ex itineribus per Libyam Aegyptum Nubiam Dongalam Syriam Arabiam et Habessiniam publico institutis sumptu Friderici Guilelmi Hemprich et Christiani Godofredi Ehrenberg : studio annis MDCCCXX-MDCCCXXV redierunt. Berlin, 1828 (Berolini : Ex Officina Academica, venditur a Mittlero) Scan bei archive.org
doi.org
Mohammad Sadegh Farhadinia & Negin Valizadegan (2015): A preliminary baseline status of the Syrian Brown Bear Ursus arctos syriacus (Mammalia: Carnivora: Ursidae) in Golestanak, Northern Iran. Journal of Threatened Taxa 7(1): 6796–6799. doi:10.11609/JoTT.o3708.6796-9
A.C. Kitchener (2010): Taxonomic issues in bears: impacts on conservation in zoos and the wild, and gaps in current knowledge. International Zoo Yearbook 44: 33–46. doi:10.1111/j.1748-1090.2009.00087.x
Mohammad Reza Ashrafzadeh, Mohammad Kaboli, Mohammad Reza Naghavi (2016): Mitochondrial DNA analysis of Iranian brown bears (Ursus arctos) reveals new phylogeographic lineage. Mammalian Biology81(1): 1–9. (online before print) doi:10.1016/j.mambio.2015.09.001
M. Murtskhvaladze, A. Gavashelishvili, D. Tarkhnishvili (2010): Geographic and genetic boundaries of brown bear (Ursus arctos) population in the Caucasus. Molecular Ecology 19: 1829–1841. doi:10.1111/j.1365-294X.2010.04610.x