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Baca, Mateusz, Danijela Popović, Krzysztof Stefaniak, Adrian Marciszak, Mikołaj Urbanowski, Adam Nadachowski, and Paweł Mackiewicz. "Retreat and Extinction of the Late Pleistocene Cave Bear (Ursus Spelaeus Sensu Lato)." Naturwissenschaften 2016.

Baca, Mateusz, et al. "Retreat and Extinction of the Late Pleistocene Cave Bear (Ursus Spelaeus Sensu Lato)." Naturwissenschaften 2016.