@misc{indiciae80c2e329d9e7,
  title = {Direct-Circulation Stirling-Cycle Refrigerator},
  author = {Ellison, Woody and Kohuth, Randall, Sr.},
  year = {1995},
  url = {https://ntrs.nasa.gov/citations/19950065604},
  note = {Source identifier: 19950065604}
}