@misc{indiciae241bfd1a86ca,
  title = {Focal spots: I. MTF separability.},
  author = {A E Burgess},
  doi = {10.1097/00004424-197701000-00011},
  url = {https://pubmed.ncbi.nlm.nih.gov/838556/},
  note = {Source identifier: 838556}
}