@misc{indiciae1ba281233112,
  title = {Quadractic Forms Which Represent All Integers.},
  author = {L E Dickson},
  year = {1926},
  doi = {10.1073/pnas.12.12.756},
  url = {https://pubmed.ncbi.nlm.nih.gov/16587150/},
  note = {Source identifier: 16587150}
}