@misc{indiciaef6f577606040,
  title = {Electrochemical carbon dioxide concentrator: Math model},
  author = {Marshall, R. D. and Schubert, F. H. and Carlson, J. N.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19740001989},
  note = {Source identifier: 19740001989}
}