@misc{indiciaeab397b25a36c,
  title = {Quaternionic Dirac equation.},
  author = {AJ Davies},
  year = {1990},
  doi = {10.1103/physrevd.41.2628},
  url = {https://pubmed.ncbi.nlm.nih.gov/10012654/},
  note = {Source identifier: 10012654}
}