@misc{indiciae6802b5e3ad22,
  title = {Polar bear maternal den habitat in the Arctic National Wildlife Refuge, Alaska},
  author = {George M. Durner and Steven C. Amstrup and Ken J. Ambrosius},
  year = {2009},
  doi = {10.14430/arctic361},
  url = {https://pubs.usgs.gov/publication/70030573},
  note = {Source identifier: 70030573}
}