@misc{indiciae5cec4a2d399b,
  title = {Three Mars years - Viking Lander 1 imaging observations},
  author = {Arvidson, R. E. and Guinness, E. A. and Moore, H. J. and Tillman, J. and Wall, S. D.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19840027753},
  note = {Source identifier: 19840027753}
}