@misc{1173346,
  author = {R H Kropschot and B W Birmingham and D B Mann},
  title = {Technology of liquid helium:},
  year = {1968},
  month = {1968-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.MONO.111},
  language = {en},
}