@misc{indiciae58a8bbf8fc06,
  title = {Helical Gears Modified To Decrease Transmission Errors},
  author = {Handschuh, R. F. and Coy, J. J. and Litvin, F. L. and Zhang, J.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19930000668},
  note = {Source identifier: 19930000668}
}