@misc{indiciae01b2e39caad5,
  title = {Comparative calculation of tonograms.},
  author = {L J DE HEER and G H JONKERS},
  year = {1962},
  doi = {10.1159/000304355},
  url = {https://pubmed.ncbi.nlm.nih.gov/14025808/},
  note = {Source identifier: 14025808}
}