@misc{indiciae837e3f6b97e7,
  title = {Electrochemical carbon dioxide concentrator subsystem development},
  author = {Heppner, D. B. and Dahlausen, M. J. and Schubert, F. H.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19840009789},
  note = {Source identifier: 19840009789}
}