@misc{indiciaeb2380b30e46d,
  title = {Know the normal, or else...},
  author = {R S Illingworth},
  year = {1979},
  doi = {10.1136/adc.54.11.849},
  url = {https://pubmed.ncbi.nlm.nih.gov/526025/},
  note = {Source identifier: 526025}
}