@misc{indiciae8b636cc9b6d5,
  title = {Touchdown Ball-Bearing System for Magnetic Bearings},
  author = {Kingsbury, Edward P. and Price, Robert and Gelotte, Erik and Singer, Herbert B.},
  year = {2003},
  url = {https://ntrs.nasa.gov/citations/20110023777},
  note = {Source identifier: 20110023777}
}