@misc{indiciaec76f9e615c3a,
  title = {Viking lander camera radiometry calibration report, volume 2},
  author = {Wolf, M. R. and Atwood, D. L. and Morrill, M. E.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780014410},
  note = {Source identifier: 19780014410}
}