@misc{indiciae4657e6309aad,
  title = {Eye ultrastructure, colour reception and behaviour.},
  author = {C G Bernhard and J Boëthius and G Gemne and G Struwe},
  year = {1970},
  doi = {10.1038/226865a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/5444633/},
  note = {Source identifier: 5444633}
}