@misc{indiciae5bf15f58f602,
  title = {A Type of Universal Arithmetical Forms.},
  author = {E T Bell},
  year = {1943},
  doi = {10.1073/pnas.29.11.375},
  url = {https://pubmed.ncbi.nlm.nih.gov/16588628/},
  note = {Source identifier: 16588628}
}