@misc{indiciae0de7b50ff8e8,
  title = {Two systems developed for purifying inert atmospheres},
  author = {Foster, M. S. and Johnson, C. E. and Kyle, M. L.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690000026},
  note = {Source identifier: 19690000026}
}