@misc{indiciaeb278baebf379,
  title = {Helium 3/Helium 4 dilution cryocooler for space},
  author = {Hendricks, John B. and Dingus, Michael L.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910011014},
  note = {Source identifier: 19910011014}
}