@misc{indiciaeb2a1c8fc2cfc,
  title = {Nonintrusive shaft speed sensor},
  author = {Barkhoudarian, S. and Wyett, L. and Maram, J.},
  year = {1985},
  url = {https://ntrs.nasa.gov/citations/19850018597},
  note = {Source identifier: 19850018597}
}