@misc{indiciae36fb429a07d3,
  title = {Spatial frequency discrimination at different orientations.},
  author = {D W Heeley and B Timney},
  year = {1989},
  doi = {10.1016/0042-6989(89)90068-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/2617868/},
  note = {Source identifier: 2617868}
}