@misc{indiciae58d2d99dced6,
  title = {Portable interference refractometers in anaesthesia.},
  author = {G H Hulands and J F Nunn},
  year = {1970},
  doi = {10.1093/bja/42.12.1051},
  url = {https://pubmed.ncbi.nlm.nih.gov/5504445/},
  note = {Source identifier: 5504445}
}