@misc{indiciae2820bbd41f98,
  title = {Fermat's Quotient and Related Arithmetic Functions.},
  author = {H S Vandiver},
  year = {1945},
  doi = {10.1073/pnas.31.1.55},
  url = {https://pubmed.ncbi.nlm.nih.gov/16588683/},
  note = {Source identifier: 16588683}
}