@misc{indiciaef569dd846570,
  title = {THE CRYSTAL CLOCK.},
  author = {W A Marrison},
  year = {1930},
  doi = {10.1073/pnas.16.7.496},
  url = {https://pubmed.ncbi.nlm.nih.gov/16577279/},
  note = {Source identifier: 16577279}
}