@misc{indiciae23c686ec16df,
  title = {Spatial frequency and light-spread descriptions of visual acuity and hyperacuity.},
  author = {G Westheimer},
  year = {1977},
  doi = {10.1364/josa.67.000207},
  url = {https://pubmed.ncbi.nlm.nih.gov/839301/},
  note = {Source identifier: 839301}
}