@misc{indiciae5153e57fe1d0,
  title = {Derivative expansions in quantum electrodynamics.},
  author = {HW Lee and PY Pac and HK Shin},
  year = {1989},
  doi = {10.1103/physrevd.40.4202},
  url = {https://pubmed.ncbi.nlm.nih.gov/10011814/},
  note = {Source identifier: 10011814}
}