@misc{indiciae49b9cd13f696,
  title = {Proceedings: A gas flow integrator with continuous drift compensation.},
  author = {G B Drummond and P G Goodenough},
  year = {1973},
  doi = {10.1093/bja/45.12.1232-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/4274485/},
  note = {Source identifier: 4274485}
}