@misc{indiciaeab26a39f530e,
  title = {Scotopic vision: an unexpected threshold elevation produced by dark annuli.},
  author = {H J Wyatt},
  year = {1972},
  doi = {10.1016/0042-6989(72)90064-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/4636128/},
  note = {Source identifier: 4636128}
}