@misc{indiciaef7db0728a923,
  title = {Phobos and Deimos astrometric observations from Viking},
  author = {Duxbury, T. C. and Callahan, J. D.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19880062470},
  note = {Source identifier: 19880062470}
}