@misc{indiciaefd35d0b31278,
  title = {Improved liquid-level sensor for cryogenics},
  author = {Hyman, L. G. and Sheppard, J. F. and Spinka, H.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690000210},
  note = {Source identifier: 19690000210}
}