@misc{indiciaeb63f1997c623,
  title = {Double-valence-fluctuating molecules and superconductivity.},
  author = {JE Hirsch and DJ Scalapino},
  year = {1985},
  doi = {10.1103/physrevb.32.5639},
  url = {https://pubmed.ncbi.nlm.nih.gov/9937810/},
  note = {Source identifier: 9937810}
}