@misc{indiciae00000cb06e72,
  title = {A pocket refracto.},
  author = {S W Cohen},
  year = {1968},
  doi = {10.1016/0002-9394(68)92822-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/5686932/},
  note = {Source identifier: 5686932}
}