@misc{indiciae819c74354f26,
  title = {A program for adding and subtracting refractive powers with oblique crossed cylinders.},
  author = {C Huber},
  year = {1985},
  doi = {10.1016/s0146-2776(85)80026-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/3838740/},
  note = {Source identifier: 3838740}
}