@misc{indiciae6844009aec4b,
  title = {Space-variant models of visual acuity using self-adjoint integral operators.},
  author = {A L Stewart and R S Pinkham},
  year = {1994},
  doi = {10.1007/bf00197319},
  url = {https://pubmed.ncbi.nlm.nih.gov/8068777/},
  note = {Source identifier: 8068777}
}