@misc{indiciae03ef85bb1cd2,
  title = {Variational approximation for two-color ionization.},
  author = {F Zhou and L Rosenberg},
  year = {1991},
  doi = {10.1103/physreva.44.3270},
  url = {https://pubmed.ncbi.nlm.nih.gov/9906328/},
  note = {Source identifier: 9906328}
}