@misc{indiciae34f83f1e2edc,
  title = {Human disturbances of denning polar bears in Alaska},
  author = {Steven C. Amstrup},
  year = {1993},
  doi = {10.14430/arctic1349},
  url = {https://pubs.usgs.gov/publication/1012907},
  note = {Source identifier: 1012907}
}