@misc{indiciae370669641693,
  title = {Retinal has a highly dipolar vertically excited singlet state: implications for vision.},
  author = {R Mathies and L Stryer},
  year = {1976},
  doi = {10.1073/pnas.73.7.2169},
  url = {https://pubmed.ncbi.nlm.nih.gov/1065867/},
  note = {Source identifier: 1065867}
}