@misc{indiciae3ae9d4465d28,
  title = {Modeling simple-cell direction selectivity with normalized, half-squared, linear operators.},
  author = {D J Heeger},
  year = {1993},
  doi = {10.1152/jn.1993.70.5.1885},
  url = {https://pubmed.ncbi.nlm.nih.gov/8294961/},
  note = {Source identifier: 8294961}
}