@misc{indiciaec4d597215936,
  title = {Progressive power lenses.},
  author = {B Milder and M L Rubin},
  doi = {10.1016/0039-6257(87)90094-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/3445221/},
  note = {Source identifier: 3445221}
}