@misc{indiciae2c8498ea62db,
  title = {Action-angle formulation of angular momentum.},
  author = {RA Leacock and MJ Padgett},
  year = {1986},
  doi = {10.1103/physreva.33.2775},
  url = {https://pubmed.ncbi.nlm.nih.gov/9896964/},
  note = {Source identifier: 9896964}
}