@misc{indiciae401ab8663306,
  title = {Using Forward Looking Infrared (FLIR) imagery to detect polar bear maternal dens: Operations manual},
  author = {Geoffrey S. York and Steven C. Amstrup and Kristin S. Simac},
  year = {2004},
  url = {https://pubs.usgs.gov/publication/70187772},
  note = {Source identifier: 70187772}
}