@misc{1155901,
  author = {Richard C Muhlenhaupt},
  title = {The single-engine claude cycle as a 4.2⁰ K refrigerator:},
  year = {1967},
  month = {1967-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.TN.354},
  language = {en},
}