@misc{indiciae709e1e77a35c,
  title = {Computer identification of ground pattern from aerial photographs.},
  author = {Richardson, A. J. and Torline, R. J. and Allen, W. A.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19720028176},
  note = {Source identifier: 19720028176}
}