@misc{indiciaea157d4e24363,
  title = {Pioneer Venus radar mapper experiment},
  author = {G.H. Pettengill and P.G. Ford and W.E. Brown and W.M. Kaula and C.H. Keller and H. Masursky and G.E. McGill},
  year = {1979},
  doi = {10.1126/science.203.4382.806},
  url = {https://pubs.usgs.gov/publication/70012280},
  note = {Source identifier: 70012280}
}