@misc{indiciae0a082f7bad9d,
  title = {Mars exploration},
  author = {M. H. Carr and James B. Garvin},
  year = {2001},
  doi = {10.1038/35084200},
  url = {https://pubs.usgs.gov/publication/70209890},
  note = {Source identifier: 70209890}
}