@misc{indiciae349d50e87e9c,
  title = {Revolutionary Concepts for Helicopter Noise Reduction: SILENT Program},
  author = {Edwards, Bryan and Cox, Charles and Booth, Earl R., Jr.},
  year = {2002},
  url = {https://ntrs.nasa.gov/citations/20020051150},
  note = {Source identifier: 20020051150}
}