@misc{indiciaeae18c4e98102,
  title = {Target structure and visual distance.},
  author = {S H Bartley and R W Winters},
  year = {1968},
  doi = {10.1080/00223980.1968.10544958},
  url = {https://pubmed.ncbi.nlm.nih.gov/5727455/},
  note = {Source identifier: 5727455}
}