@misc{indiciaec153de01ff77,
  title = {Noise generation by ducted combustion systems},
  author = {Chiu, H. H. and Plett, E. G. and Summerfield, M.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19740029473},
  note = {Source identifier: 19740029473}
}