@misc{indiciae11b9b30de895,
  title = {Observability of quaternionic quantum mechanics.},
  author = {AJ Davies and BH McKellar},
  year = {1992},
  doi = {10.1103/physreva.46.3671},
  url = {https://pubmed.ncbi.nlm.nih.gov/9908556/},
  note = {Source identifier: 9908556}
}