@misc{indiciae1c163e3a6f6d,
  title = {Observer variability in pinniped counts: Ground-based enumeration of walruses at haul-out sites},
  author = {Mark S. Udevitz and C.V. Jay and M.B. Cody},
  year = {2005},
  doi = {10.1111/j.1748-7692.2005.tb01211.x},
  url = {https://pubs.usgs.gov/publication/70028999},
  note = {Source identifier: 70028999}
}