@misc{indiciaedd2e6a0a5fd3,
  title = {Viking orbital colorimetric images of Mars: Preliminary results},
  author = {L.A. Soderblom},
  year = {1976},
  doi = {10.1126/science.194.4260.97},
  url = {https://pubs.usgs.gov/publication/70011025},
  note = {Source identifier: 70011025}
}