@misc{indiciae634126d92978,
  title = {Cliff and slope topography of part of the Grand Canyon, Arizona as characterized on a seasat radar image},
  author = {G. L. Berlin and G. G. Schaber and R.C. Kozak and P. Chavez},
  year = {1982},
  doi = {10.1016/0034-4257(82)90008-6},
  url = {https://pubs.usgs.gov/publication/70011864},
  note = {Source identifier: 70011864}
}