@misc{indiciae0fcb0c8ac961,
  title = {Cooldown time for simple cryogenic pipelines.},
  author = {Brennan, J. A. and Smith, R. V. and Steward, W. G.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680062059},
  note = {Source identifier: 19680062059}
}