@misc{indiciae06025af5d2ab,
  title = {Helical Face Gear Development Under the Enhanced Rotorcraft Drive System Program},
  author = {Heath, Gregory F. and Slaughter, Stephen C. and Fisher, David J. and Lewicki, David G. and Fetty, Jason},
  year = {2011},
  url = {https://ntrs.nasa.gov/citations/20120000867},
  note = {Source identifier: 20120000867}
}