@misc{indiciae79ccc7a4bb5d,
  title = {The case for Mars: Concept development for a Mars research station},
  author = {Welch, S. M. and Stoker, C. R.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19870001379},
  note = {Source identifier: 19870001379}
}