@misc{indiciaeb88f5b9979a5,
  title = {Liquid-vapour surface sensors for liquid nitrogen and hydrogen},
  author = {Siegwarth, J. D. and Voth, R. O. and Snyder, S. M.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19920041228},
  note = {Source identifier: 19920041228}
}