@misc{indiciae15b78f4735eb,
  title = {Factors affecting the noise from small propeller driven aircraft},
  author = {Maglieri, D. J. and Hubbard, H. H.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19750052586},
  note = {Source identifier: 19750052586}
}