@misc{indiciae8ea1c2456dd7,
  title = {Electronic position indicator for latching solenoid valves},
  author = {Frye, R. J. and Wimmer, H. L.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690011512},
  note = {Source identifier: 19690011512}
}