@misc{indiciae0e4eed8214cc,
  title = {Requirements for maintaining cryogenic propellants during planetary surface stays},
  author = {Riccio, Joseph R. and Schoenberg, Richard J.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910067758},
  note = {Source identifier: 19910067758}
}