@misc{indiciae41b30a90ea49,
  title = {The canyon system on Mars},
  author = {Baerbel K. Lucchitta and A. S. McEwen and Gary D. Clow and Paul E. Geissler and R.B. Singer and R. A. Schultz and Steven W. Squyres},
  year = {1992},
  url = {https://pubs.usgs.gov/publication/70200556},
  note = {Source identifier: 70200556}
}