@misc{indiciae5583edecf69e,
  title = {Mars Sample Return Strategic Approach to Backward Planetary Protection},
  author = {Salvo, Chris and Muirhead, Brian and Gershman, Bob},
  year = {2021},
  url = {https://ntrs.nasa.gov/citations/20220003455},
  note = {Source identifier: 20220003455}
}