@misc{indiciaec6d52cb9d72e,
  title = {Recent concepts in missions to Mars - Extraterrestrial processes},
  author = {Ramohalli, Kumar and Lawton, Emil and Ash, Robert},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890040967},
  note = {Source identifier: 19890040967}
}