@misc{indiciaeaf497c080ebc,
  title = {Vibration in Planetary Gear Systems with Unequal Planet Stiffnesses},
  author = {Frater, J. L. and August, R. and Oswald, F. B.},
  year = {1982},
  url = {https://ntrs.nasa.gov/citations/19830021438},
  note = {Source identifier: 19830021438}
}