@misc{indiciaea090417f3f09,
  title = {A digital system for generating dynamic sinusoidal gas concentration signals.},
  author = {S A Barton and L Sutton and C E Hahn and A M Black},
  year = {1988},
  doi = {10.1152/jappl.1988.65.2.945},
  url = {https://pubmed.ncbi.nlm.nih.gov/3170441/},
  note = {Source identifier: 3170441}
}