@misc{indiciae63e09e52fdae,
  title = {Physical properties of the surface materials at the Viking landing sites on Mars},
  author = {H. J. Moore and R.E. Hutton and G.D. Clow and C.R. Spitzer},
  year = {1987},
  doi = {10.3133/pp1389},
  url = {https://pubs.usgs.gov/publication/pp1389},
  note = {Source identifier: pp1389}
}