@misc{indiciae628d0241e6b5,
  title = {Rotor blade-vortex interaction noise reduction and vibration using higher harmonic control},
  author = {Brooks, Thomas F. and Booth, Earl R., Jr.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19920053154},
  note = {Source identifier: 19920053154}
}