@misc{indiciaeda2ab600494a,
  title = {Exhaust entry monitored automatically with flame ionization and indicator tubes.},
  author = {D R McFee and H R Fish},
  year = {1971},
  doi = {10.1080/0002889718506545},
  url = {https://pubmed.ncbi.nlm.nih.gov/4112941/},
  note = {Source identifier: 4112941}
}