@misc{indiciae7f0472366f9c,
  title = {Hybrid diffractive-refractive achromatic spectacle lenses.},
  author = {W N Charman},
  year = {1994},
  doi = {10.1016/0275-5408(94)90165-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/7845697/},
  note = {Source identifier: 7845697}
}