@misc{indiciae8d4d8d567828,
  title = {Grating contrast as a function of visual angle and fixation.},
  author = {W R Mackavey},
  year = {1967},
  doi = {10.1364/josa.57.000277},
  url = {https://pubmed.ncbi.nlm.nih.gov/6034534/},
  note = {Source identifier: 6034534}
}