@misc{indiciae51acf4bb0a63,
  title = {Cooldown time for simple cryogenic pipelines},
  author = {Brennan, J. A. and Smith, R. V. and Steward, W. G.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19680009845},
  note = {Source identifier: 19680009845}
}