@misc{indiciae8ee814ffdb77,
  title = {Planetary quarantine analysis for an unmanned Mars orbiter},
  author = {Hall, L. B. and Haynes, N. R. and Hoffmann, A. R. and Reichert, R. J.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710053102},
  note = {Source identifier: 19710053102}
}