@misc{indiciae2ea0633e4e46,
  title = {Spatial summation in young and elderly observers.},
  author = {B Brown and C Peterken and K J Bowman and B Crassini},
  year = {1989},
  doi = {10.1111/j.1475-1313.1989.tb00913.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/2622674/},
  note = {Source identifier: 2622674}
}