@misc{indiciae66267fce0bcc,
  title = {Classical spin and its quantization.},
  author = {PD Mannheim},
  year = {1985},
  doi = {10.1103/physrevd.32.898},
  url = {https://pubmed.ncbi.nlm.nih.gov/9956219/},
  note = {Source identifier: 9956219}
}