@misc{indiciaef57f791a3744,
  title = {Fifty-five foot diameter ringsail parachute. Planetary entry parachute program Final technical report},
  author = {Stone, F. J.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19680010846},
  note = {Source identifier: 19680010846}
}