@misc{indiciae345dd58e4589,
  title = {Variable features on Mars - Preliminary Mariner 9 television results.},
  author = {Sagan, C. and Veverka, J. and Fox, P. and Dubisch, R. and Lederberg, J. and Levinthal, E. and Quam, L. and Tucker, R. and Pollack, J. B. and Smith, B. A.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730032676},
  note = {Source identifier: 19730032676}
}