@misc{indiciae43c62c2d908f,
  title = {The code of chronicity.},
  author = {A M Ludwig and F Farrelly},
  year = {1966},
  doi = {10.1001/archpsyc.1966.01730180002002},
  url = {https://pubmed.ncbi.nlm.nih.gov/5925132/},
  note = {Source identifier: 5925132}
}