@misc{indiciae60ef69d0dc3b,
  title = {Visual pigments before and after extraction from visual cells.},
  author = {H J DARTNALL},
  year = {1961},
  doi = {10.1098/rspb.1961.0031},
  url = {https://pubmed.ncbi.nlm.nih.gov/13719817/},
  note = {Source identifier: 13719817}
}