Ingólfsson, Ólafur, and Øystein Wiig. “Late Pleistocene Fossil Find in Svalbard: The Oldest Remains of a Polar Bear (Ursus Maritimus Phipps, 1744) Ever Discovered”. Polar Research 28, no. 3 (December 1, 2009): 455-462. Accessed June 2, 2020. https://polarresearch.net/index.php/polar/article/view/2852.