@misc{indiciaeec25cd9effb3,
  title = {Breaking the code.},
  author = {G S Crockett},
  year = {1970},
  doi = {10.1016/s0140-6736(70)91179-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/4191653/},
  note = {Source identifier: 4191653}
}