@misc{indiciaeb7f78d2871e2,
  title = {Technical notes. Multiple checkerboard targets for testing visual acuity.},
  author = {I SCHWARTZ and S M LURIA},
  year = {1960},
  url = {https://pubmed.ncbi.nlm.nih.gov/13749096/},
  note = {Source identifier: 13749096}
}