@misc{indiciae21e0ed7bb1b1,
  title = {The northern Yellowstone elk herd; management policy and natural regulation},
  author = {Dale R. McCullough and Koichi Kaji and Masami Yamanaka},
  year = {2006},
  url = {https://pubs.usgs.gov/publication/70160326},
  note = {Source identifier: 70160326}
}