@misc{indiciae46444b8408c7,
  title = {Bifocal trial lenses.},
  author = {J D M CARDELL},
  year = {1959},
  doi = {10.1136/bjo.43.2.116},
  url = {https://pubmed.ncbi.nlm.nih.gov/13628955/},
  note = {Source identifier: 13628955}
}