@misc{indiciae318ed86bcb58,
  title = {Oxygen concentrations in tents.},
  author = {G W Burton and G Wray},
  year = {1967},
  doi = {10.1136/bmj.4.5578.552-c},
  url = {https://pubmed.ncbi.nlm.nih.gov/6066005/},
  note = {Source identifier: 6066005}
}