@misc{indiciae54dbca4e440a,
  title = {delta expansion applied to quantum electrodynamics.},
  author = {CM Bender and S Boettcher and KA Milton},
  year = {1992},
  doi = {10.1103/physrevd.45.639},
  url = {https://pubmed.ncbi.nlm.nih.gov/10014417/},
  note = {Source identifier: 10014417}
}