@misc{indiciae411fa854b2de,
  title = {Noise generated by quiet engine fans. 3: Fan C},
  author = {Montegan, F. J. and Schaefer, J. W. and Schmiedlin, R. F.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19760011046},
  note = {Source identifier: 19760011046}
}