@misc{indiciaef31824dc6f6b,
  title = {Functional Schrödinger equation for scalar QED.},
  author = {C Kiefer},
  year = {1992},
  doi = {10.1103/physrevd.45.2044},
  url = {https://pubmed.ncbi.nlm.nih.gov/10014577/},
  note = {Source identifier: 10014577}
}