@misc{indiciae0b3117e0cc5a,
  title = {Safe-period statistics.},
  author = {C M Clarke},
  year = {1968},
  doi = {10.1016/s0140-6736(68)92373-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/4173701/},
  note = {Source identifier: 4173701}
}