@misc{indiciae3b7ca8227b4a,
  title = {Performance optimization for rotors in hover and axial flight},
  author = {Quackenbush, T. R. and Wachspress, D. A. and Kaufman, A. E. and Bliss, D. B.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890011602},
  note = {Source identifier: 19890011602}
}