@misc{indiciae848810812871,
  title = {Radar characteristics of Viking 1 landing sites},
  author = {G.L. Tyler and D.B. Campbell and G.S. Downs and R.R. Green and H. J. Moore},
  year = {1976},
  doi = {10.1126/science.193.4255.812},
  url = {https://pubs.usgs.gov/publication/70010932},
  note = {Source identifier: 70010932}
}