@misc{indiciae0fbf632ca715,
  title = {Optics and visual physiology.},
  author = {I M Siegel},
  year = {1972},
  doi = {10.1001/archopht.1972.01000030214018},
  url = {https://pubmed.ncbi.nlm.nih.gov/4339874/},
  note = {Source identifier: 4339874}
}