@misc{indiciae930fbd7a5474,
  title = {Minimal-flow nitrous oxide anesthesia.},
  author = {R W Virtue},
  year = {1974},
  doi = {10.1097/00000542-197402000-00021},
  url = {https://pubmed.ncbi.nlm.nih.gov/4812720/},
  note = {Source identifier: 4812720}
}