@misc{indiciaef222cc6f9ef7,
  title = {Optimal allocation of point-count sampling effort},
  author = {Richard J. Barker and John R. Sauer and William A. Link},
  year = {1993},
  doi = {10.2307/4088630},
  url = {https://pubs.usgs.gov/publication/5222806},
  note = {Source identifier: 5222806}
}