@misc{indiciaec538bf25433c,
  title = {Keldysh approximation in one and three dimensions.},
  author = {HR Reiss},
  year = {1990},
  doi = {10.1103/physreva.41.6530},
  url = {https://pubmed.ncbi.nlm.nih.gov/9903057/},
  note = {Source identifier: 9903057}
}