@misc{indiciae23423385eb6d,
  title = {Seeing with S cones.},
  author = {D J Calkins},
  year = {2001},
  doi = {10.1016/s1350-9462(00)00026-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/11286894/},
  note = {Source identifier: 11286894}
}