@misc{indiciaea8d3a9fdc94d,
  title = {Penetrator role in Mars sample strategy},
  author = {Boynton, William and Dwornik, Steve and Eckstrom, William and Roalstad, David A.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19890008941},
  note = {Source identifier: 19890008941}
}