@misc{indiciae710e801a4a5c,
  title = {Surface composition of Mars: A Viking multispectral view},
  author = {Adams, John B. and Smith, Milton O. and Arvidson, Raymond E. and Dale-Bannister, Mary and Guinness, Edward A. and Singer, Robert},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19880020271},
  note = {Source identifier: 19880020271}
}