@misc{indiciae21161f7fb09f,
  title = {Inorganic chemical investigation by x-ray fluorescence analysis: The Viking Mars Lander},
  author = {P. Toulmin and A. K. Baird and B. C. Clark and Klaus Keil and H. J. Rose},
  year = {1973},
  doi = {10.1016/0019-1035(73)90048-1},
  url = {https://pubs.usgs.gov/publication/70010228},
  note = {Source identifier: 70010228}
}