@misc{indiciaec926ef86149b,
  title = {Redundant control system for X-wing valve actuators},
  author = {Arifian, Kenneth C. and Skonieczny, Joseph P.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/20080008242},
  note = {Source identifier: 20080008242}
}