@misc{indiciaec650c7567676,
  title = {A NEW PERIMETER FOR CENTRAL AND PERIPHERAL FIELDS.},
  author = {D D DONALDSON and E W NORTON},
  year = {1963},
  doi = {10.1001/archopht.1963.00960050450003},
  url = {https://pubmed.ncbi.nlm.nih.gov/14078863/},
  note = {Source identifier: 14078863}
}