@misc{indiciaef0d11a0f4b89,
  title = {Estimating optimal sampling unit sizes for satellite surveys},
  author = {Hallum, C. R. and Perry, C. R., Jr.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19840039605},
  note = {Source identifier: 19840039605}
}