@misc{indiciae97f2bfea27b4,
  title = {Imaging characteristics of photogrammetric camera systems},
  author = {R. Welch and J. Halliday},
  year = {1973},
  doi = {10.1016/0031-8663(73)90006-9},
  url = {https://pubs.usgs.gov/publication/70010069},
  note = {Source identifier: 70010069}
}