@misc{indiciae6b86c69a6cc8,
  title = {Linear Transformations in Hilbert Space: III. Operational Methods and Group Theory.},
  author = {M H Stone},
  year = {1930},
  doi = {10.1073/pnas.16.2.172},
  url = {https://pubmed.ncbi.nlm.nih.gov/16587545/},
  note = {Source identifier: 16587545}
}