@misc{indiciaeb5e36af67a74,
  title = {Optical Shaft-Angle Encoder For Helicopter Rotor},
  author = {Golub, Robert A. and Fitzpatrick, Fred and Dennis, Dale V. and Taylor, Bryant D.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19930000286},
  note = {Source identifier: 19930000286}
}