@misc{indiciaeb75ca20ba537,
  title = {Shuttle imaging radar: Physical controls on signal penetration and subsurface scattenng in the Eastern Sahara},
  author = {Gerald G. Schaber and John F. McCauley and Carol S. Breed and Gary R. Olhoeft},
  year = {1986},
  doi = {10.1109/tgrs.1986.289677},
  url = {https://pubs.usgs.gov/publication/70015707},
  note = {Source identifier: 70015707}
}