@misc{indiciae3144dd1db963,
  title = {Halberg tonometer. An evaluation.},
  author = {J François and P Vancea and R Vanderkerckhove},
  year = {1971},
  doi = {10.1001/archopht.1971.01000010378004},
  url = {https://pubmed.ncbi.nlm.nih.gov/5110130/},
  note = {Source identifier: 5110130}
}