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Christiansen, Per (2008). "Feeding ecology and morphology of the upper canines in bears (carnivora: Ursidae)". Journal of Morphology. 269 (#7): 896–908. doi:10.1002/jmor.10643. PMID18488989. S2CID33532210.
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Ambarlı, H. (2016). "Litter size and basic diet of brown bears (Ursus arctos, Carnivora) in northeastern Turkey". Mammalia. 80 (2). doi:10.1515/mammalia-2014-0111. S2CID87968464.
Schwartz, C. C.; Haroldson, M. A.; White, G. C.; Harris, R. B.; Cherry, S.; Keating, K. A.; Moody, D.; Servheen, C. (2006). "Temporal, Spatial, and Environmental Influences on the Demographics of Grizzly Bears in the Greater Yellowstone Ecosystem". Wildlife Monographs. 161: 1–68. doi:10.2193/0084-0173(2006)161[1:TSAEIO]2.0.CO;2. S2CID85600938.
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sixote-alin.ru
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