@misc{indiciae3616b3f5f72e,
  title = {An analytical method for designing low noise helicopter transmissions},
  author = {Bossler, R. B., Jr. and Bowes, M. A. and Royal, A. C.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19790002688},
  note = {Source identifier: 19790002688}
}