@misc{indiciaee2ac257f919b,
  title = {Program PDP001; GENADD},
  author = {M.A.M. Donzeau},
  year = {1979},
  doi = {10.3133/ofr80137},
  url = {https://pubs.usgs.gov/publication/ofr80137},
  note = {Source identifier: ofr80137}
}