@misc{indiciae19e697acdc6c,
  title = {Which pH paper?},
  author = {A Chaffe},
  year = {1987},
  doi = {10.1093/bja/59.9.1189},
  url = {https://pubmed.ncbi.nlm.nih.gov/3663441/},
  note = {Source identifier: 3663441}
}