@misc{indiciaea0ce22ec502c,
  title = {Compact Analyzer/Controller For Oxygen-Enrichment System},
  author = {Puster, Richard L. and Singh, Jag J. and Sprinkle, Danny R.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900000271},
  note = {Source identifier: 19900000271}
}