@article{10957,
  author = {E. Condon},
  title = {Intensity-Dependent Absorption of Light},
  year = {1964},
  journal = {Proceedings of the National Academy of Sciences U S A},
  volume = {52},
  pages = {635\textendash637},
  url = {http://www.jstor.org/discover/10.2307/72612?uid=21377\&uid=3739568\&uid=2129\&uid=2\&uid=70\&uid=3\&uid=67\&uid=21375\&uid=62\&uid=3739256\&sid=21102653935223},
  note = {JILA Pub. 66},
}