@misc{indiciaeb16d292f7b64,
  title = {A portable oxygen analyser.},
  author = {A BRACKEN},
  year = {1953},
  doi = {10.1093/bja/25.4.383},
  url = {https://pubmed.ncbi.nlm.nih.gov/13093890/},
  note = {Source identifier: 13093890}
}