@article{5520,
  author = {Maciej Lewenstein and Ph. Balcou and Misha Ivanov and Anne L'Huillier and P. Corkum},
  title = {Theory of high-harmonic generation by low-frequency laser fields},
  year = {1994},
  journal = {Physical Review A},
  volume = {49},
  pages = {2117-2132},
  month = {Jan-03-1994},
  issn = {1050-2947},
  url = {http://link.aps.org/doi/10.1103/PhysRevA.49.2117},
  doi = {10.1103/PhysRevA.49.2117},
}