@misc{indiciaeb00a4eb3d5cd,
  title = {Optimization of rotor performance in hover and axial flight using a free wake analysis},
  author = {Quackenbush, T. R. and Kaufman, A. E. and Wachspress, D. A. and Bliss, D. B.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900041120},
  note = {Source identifier: 19900041120}
}