@misc{indiciae565f42080f4c,
  title = {Predicting rotor rotation noise},
  author = {Hosier, R. N. and Ramakrishnan, R. and Randall, D.},
  year = {1979},
  url = {https://ntrs.nasa.gov/citations/19780000406},
  note = {Source identifier: 19780000406}
}