@misc{indiciaed77088129789,
  title = {Environmental and human influences on trumpeter swan habitat occupancy in Alaska},
  author = {J.H. Schmidt and M. S. Lindberg and D.S. Johnson and J.A. Schmultz},
  year = {2009},
  doi = {10.1525/cond.2009.080102},
  url = {https://pubs.usgs.gov/publication/70036708},
  note = {Source identifier: 70036708}
}