@misc{indiciae69c4459e64e4,
  title = {Visual information obtained from flashes and from afterimages.},
  author = {R W Ditchburn and A E Drysdale},
  year = {1973},
  doi = {10.1016/0042-6989(73)90241-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/4771206/},
  note = {Source identifier: 4771206}
}