@misc{indiciaecf1617b4e019,
  title = {Development and validation of 'quiet tail rotor' technology},
  author = {Shenoy, Rajarama K. and Moffitt, Robert C. and Yoerkie, Charles M. and Childress, Otis, Jr.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19930045419},
  note = {Source identifier: 19930045419}
}