@misc{indiciae2f213db1a4e6,
  title = {A method for predicting helicopter wake geometry, wake-induced flow and wake effects on blade airloads},
  author = {Sadler, S. G.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710050392},
  note = {Source identifier: 19710050392}
}