@misc{indiciae8fdf9afb7ceb,
  title = {Ground pattern analysis in the Great Plains},
  author = {Egbert, D. D. and Davis, J. C. and Ulaby, F. T.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720024722},
  note = {Source identifier: 19720024722}
}