@misc{indiciae0553aba2be1c,
  title = {Five oxygen-nitrous oxide proportioning systems compared.},
  author = {P Feigenwinter and T H Pohle and A M Zbinden},
  year = {1996},
  doi = {10.1097/00003643-199601000-00013},
  url = {https://pubmed.ncbi.nlm.nih.gov/8829940/},
  note = {Source identifier: 8829940}
}