@misc{indiciae9d48c9623c5b,
  title = {Optimization of rotor performance in hover using a free wake analysis},
  author = {Quackenbush, T. R. and Wachspress, D. A. and Kaufman, A. E.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910053925},
  note = {Source identifier: 19910053925}
}