@misc{indiciae9fbacf3a5c08,
  title = {A Mars 1 Watt vortex wind energy machine},
  author = {Ralston, Michael and Crowley, Christopher and Thomson, Ronald and Gwynne, Owen},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19930058046},
  note = {Source identifier: 19930058046}
}