@misc{indiciae160c15388eb6,
  title = {Specific Constants for Visual Excitation: II.},
  author = {W J Crozier and E Wolf and G Zerrahn-Wolf},
  year = {1938},
  doi = {10.1073/pnas.24.5.221},
  url = {https://pubmed.ncbi.nlm.nih.gov/16577839/},
  note = {Source identifier: 16577839}
}