@misc{indiciaef82a7f297548,
  title = {Face Gears For Helicopter Transmissions},
  author = {Lewicki, D. G. and Litvin, F. L. and Wang, J. C. and Bossler, R. B., Jr. and Chen, Y. J. and Heath, G.},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/19940000534},
  note = {Source identifier: 19940000534}
}