@misc{indiciae0a9c1b95fd4f,
  title = {On high frequency broadband noise from model helicopter rotors},
  author = {Humbad, N. G. and Harris, W. L.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19830044690},
  note = {Source identifier: 19830044690}
}