@misc{indiciaee1ec73ac7bec,
  title = {Self-field quantum electrodynamics: The two-level atom.},
  author = {AO Barut and JP Dowling},
  year = {1990},
  doi = {10.1103/physreva.41.2284},
  url = {https://pubmed.ncbi.nlm.nih.gov/9903354/},
  note = {Source identifier: 9903354}
}