@misc{indiciae8aa38a099303,
  title = {Classical physics and quantum loops.},
  author = {Barry R Holstein and John F Donoghue},
  year = {2004},
  doi = {10.1103/physrevlett.93.201602},
  url = {https://pubmed.ncbi.nlm.nih.gov/15600910/},
  note = {Source identifier: 15600910}
}