@misc{indiciaed41d1ef52f0d,
  title = {RECORDING LENS OPACITIES.},
  author = {K W CHRISTENBERRY and A C UPTON and J W CONKLIN},
  year = {1964},
  doi = {10.1001/archopht.1964.00970020667016},
  url = {https://pubmed.ncbi.nlm.nih.gov/14196753/},
  note = {Source identifier: 14196753}
}