@misc{indiciae384fad727077,
  title = {Global color variations on the Martian surface},
  author = {Soderblom, L. A. and Edwards, K. and Eliason, E. M. and Sanchez, E. M. and Charette, M. P.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19780055821},
  note = {Source identifier: 19780055821}
}