@misc{Derocher_A._E._Geographic_1998, author={Derocher, A. E. and Stirling, I.}, volume={245}, copyright={Rights Reserved - Restricted Access}, address={London}, journal={Journal of Zoology, Lond.}, howpublished={online}, year={1998}, publisher={Wiley-Blackwell}, language={eng}, title={Geographic variation in growth of polar bears ( Ursus maritimus )}, type={Text}, keywords={Polar bear, Ursus maritimus}, }