@misc{indiciaef2a437eb4b99,
  title = {Designing planetary protection into the Mars observer mission},
  author = {Sweetser, T. H. and Halsell, C. A. and Cesarone, R. J.},
  year = {1995},
  url = {https://ntrs.nasa.gov/citations/19950035187},
  note = {Source identifier: 19950035187}
}