@misc{indiciae4ba14660f621,
  title = {The visual processes underlying binocular brightness summation.},
  author = {G R Engel},
  year = {1967},
  doi = {10.1016/0042-6989(67)90038-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/5608664/},
  note = {Source identifier: 5608664}
}