@misc{indiciaead1b7362cac4,
  title = {Target intersection probabilities for parallel-line and continuous-grid types of search},
  author = {R.B. McCammon},
  year = {1977},
  doi = {10.1007/bf02047408},
  url = {https://pubs.usgs.gov/publication/70001039},
  note = {Source identifier: 70001039}
}