@misc{indiciaed5ed31a28511,
  title = {Study of a soft lander/support module for Mars missions. Volume 1 - Summary Final summary report},
  author = {Craig, H. E. and Wiltshire, R. S.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690006268},
  note = {Source identifier: 19690006268}
}