@misc{indiciaed7a58f8de661,
  title = {Action spectrum for paling (decrease in refractive index) of ultraviolet-irradiated chromosome segments.},
  author = {R E ZIRKLE and R B URETZ},
  year = {1963},
  doi = {10.1073/pnas.49.1.45},
  url = {https://pubmed.ncbi.nlm.nih.gov/14003787/},
  note = {Source identifier: 14003787}
}