@misc{indiciae021f46e43b43,
  title = {Closed-Loop Motor-Speed Control},
  author = {Smith, Matthew A. and Delcher, Ray C. and Huston, Steven W.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890000045},
  note = {Source identifier: 19890000045}
}