Amstrup, S. C. 1993. Human disturbances of denning polar bears in Alaska. Arctic 46:246­50.

Amstrup, S. C. 1995. Movements, distribution, and population dynamics of polar bears in the Beaufort Sea. Ph.D. Dissertation, University of Alaska Fairbanks, Fairbanks.

Amstrup, S. C., and D. P. DeMaster. 1988. Polar bear—Ursus maritimus. Pages 39­56 in J. W. Lentfer, ed. Selected marine mammals of Alaska: Species accounts with research and management recommendations. Marine Mammal Commission, Washington, DC.

Amstrup, S. C., and G. M. Durner. 1995. Survival rates of radio-collared female polar bears and their dependent young. Canadian Journal of Zoology 73:1312­22.

Amstrup, S. C., and C. Gardner. 1994. Polar bear maternity denning in the Beaufort Sea. Journal of Wildlife Management 58:1­10.

Amstrup, S. C., and C. A. Nielsen. 1989. Acute gastric dilatation and volvulus in a free-living polar bear. Journal of Wildlife Diseases 25:601­4.

Amstrup, S. C., I. Stirling, and J. W. Lentfer. 1986. Past and present status of polar bears in Alaska. Wildlife Society Bulletin 14:241­54.

Amstrup, S. C., C. Gardner, K. C. Myers, and F. W. Oehme. 1989. Ethylene glycol (antifreeze) poisoning in a free-ranging polar bear. Veterinary and Human Toxicology 31:317­19.

Amstrup, S. C., G. Durner, I. Stirling, N. J. Lunn, and F. Messier. 2000. Movements and distribution of polar bears in the Beaufort Sea. Canadian Journal of Zoology 78:948­66.

Amstrup, S. C., T. L. McDonald, and I. Stirling. 2001. Polar bears in the Beaufort Sea: A 30 year mark­recapture case history. Journal of Agricultural, Biological, and Environmental Statistics 6:221­34.

Amstrup, S. C., G. M. Durner, T. L. McDonald, D. M. Mulcahy, and G. W. Garner. 2001. Comparing movement patterns of satellite-tagged male and female polar bears. Canadian Journal of Zoology 79:2147­2158.

Anonymous. 1978. Furry funnels. Time 112(23):82­84. Arnould, J. P. Y., and M. A. Ramsay. 1994. Milk production and milk consumption in polar bears during the ice-free period in western Hudson Bay. Canadian Journal of Zoology 72:1365­70.

Atkinson, S. N., and M. A. Ramsay. 1995. The effects of prolonged fasting on the body composition and reproductive success of female polar bears. Functional Ecology 9:559­67.

Belikov, S. E. 1976. Behavioral aspects of the polar bear, Ursus maritimus. International Conference on Bear Research and Management 3:37­40.

Belikov, S. E., S. M. Uspenski, and A. G. Kuprijanov. 1977. Ecology of the polar bear on Wrangell Island in the denning period. Pages 7­18 in S. E. Belikov and S. M. Uspenski, eds. The polar bear and its conservation in the Soviet Arctic. Centralnaja Laboratorija Ochrany Prirody, Moscow.

Bernhoft, A., Ø. Wiig, and J. U. Skaare. 1997. Organochlorines in polar bears (Ursus maritimus) at Svalbard. Environmental Pollution 95:159­75.

Bernhoft, A., J. U. Skaare, Ø. Wiig, A. E. Derocher, and H. J. S. Larsen. 2000. Possible immunotoxic effects of organochlorines in polar bears (Ursus maritimus) at Svalbard. Journal of Toxicology and Environmental Health, Part A 59:561­74.

Best, R. C. 1982. Thermoregulation in resting and active polar bears. Journal of Comparative Physiology B 146:63­73.

Best, R. C. 1984. Digestibility of ringed seals by the polar bear. Canadian Journal of Zoology 63:1033­36.

Bethke, R., M. Taylor, S. Amstrup, and F. Messier. 1996. Population delineation of polar bears using satellite collar data. Ecological Applications 6:311­17.

Blix, A. S., and J. W. Lentfer. 1979. Modes of thermal protection in polar bear cubs: at birth and on emergence from the den. American Journal of Physiology 236:R67­74.

Blix, A. S., and J. W. Lentfer. 1992. Noise and vibration levels in artificial polar bear dens as related to selected petroleum exploration and developmental activities. Arctic 45:20­24.

Bunnell, F. L., and T. Hamilton. 1983. Forage digestibility and fitness in grizzly bears. International Conference for Bear Research and Management 5:179­ 85.