@misc{indiciae240bec44e76b,
  title = {Spatial visual channels in the Fourier plane.},
  author = {J G Daugman},
  year = {1984},
  doi = {10.1016/0042-6989(84)90065-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/6506478/},
  note = {Source identifier: 6506478}
}