@misc{indiciae754b5bce8bb5,
  title = {Indices used to assess status of sea otter populations: A reply},
  author = {James A. Estes},
  year = {1990},
  doi = {10.2307/3809040},
  url = {https://pubs.usgs.gov/publication/1017337},
  note = {Source identifier: 1017337}
}