@misc{indiciaed67f13a4b492,
  title = {Charged Probes, Bourdon Tubes Maintain Cryogenic Liquid Level},
  author = {Krejsa, Mylo J.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/20100035765},
  note = {Source identifier: 20100035765}
}