@misc{indiciae43605c2b9d62,
  title = {Simple nonrebreathing valve.},
  author = {W P Fife},
  year = {1967},
  doi = {10.1152/jappl.1967.22.6.1135},
  url = {https://pubmed.ncbi.nlm.nih.gov/5338457/},
  note = {Source identifier: 5338457}
}