@misc{indiciaecb03aeb9c220,
  title = {Recent developments in bifocal contact lenses.},
  author = {G N JESSEN},
  year = {1960},
  doi = {10.1097/00006324-196008000-00001},
  url = {https://pubmed.ncbi.nlm.nih.gov/14407202/},
  note = {Source identifier: 14407202}
}