@misc{indiciae0322bc066798,
  title = {Involutorial Simple Algebras and Real Riemann Matrices.},
  author = {A A Albert},
  year = {1934},
  doi = {10.1073/pnas.20.12.676},
  url = {https://pubmed.ncbi.nlm.nih.gov/16587930/},
  note = {Source identifier: 16587930}
}