@misc{indiciae2ccedec0c9a4,
  title = {Noise Control in Propeller-Driven Aircraft},
  author = {Rennison, D. C. and Wilby, J. F.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19830000049},
  note = {Source identifier: 19830000049}
}