@article{7135,
  author = {Sydney Geltman},
  title = {Approximate response of a two-level system to intense multimode radiation},
  year = {1981},
  journal = {Physics Letters A},
  volume = {81},
  pages = {27-30},
  month = {Jan-01-1981},
  issn = {03759601},
  doi = {10.1016/0375-9601(81)90295-4},
}