@misc{indiciae3522c74bd0d5,
  title = {Euler's Three Biquadrate Problem.},
  author = {M Ward},
  year = {1945},
  doi = {10.1073/pnas.31.4.125},
  url = {https://pubmed.ncbi.nlm.nih.gov/16578146/},
  note = {Source identifier: 16578146}
}