@misc{indiciae50f36ba55941,
  title = {Euler's Concordant Forms.},
  author = {E T Bell},
  year = {1939},
  doi = {10.1073/pnas.25.1.46},
  url = {https://pubmed.ncbi.nlm.nih.gov/16577870/},
  note = {Source identifier: 16577870}
}