@misc{indiciae8d4d6c82de7a,
  title = {Polar bears in the Beaufort Sea: A 30-year mark-recapture case history},
  author = {Steven C. Amstrup and T. L. McDonald and I. Stirling},
  year = {2001},
  doi = {10.1198/108571101750524562},
  url = {https://pubs.usgs.gov/publication/1013272},
  note = {Source identifier: 1013272}
}