@misc{indiciae1a99ef14b539,
  title = {Spatial summation for complex bar patterns.},
  author = {J J Koenderink and A J van Doorn},
  year = {1980},
  doi = {10.1016/0042-6989(80)90159-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/7434578/},
  note = {Source identifier: 7434578}
}