@misc{indiciae2e0f4521bd8e,
  title = {Critical perimetry - functioning methods.},
  author = {M Graef and H Wassill},
  year = {1999},
  doi = {10.1159/000027384},
  url = {https://pubmed.ncbi.nlm.nih.gov/9838249/},
  note = {Source identifier: 9838249}
}