@conference{8095,
  author = {K. Welge and H. Rottke},
  title = {Photoionization of the H atom in strong electric fields by resonant two-photon excitation},
  year = {1984},
  publisher = {AIP},
  url = {http://link.aip.org/link/APCPCS/v119/i1/p213/s1\&Agg=doi},
  doi = {10.1063/1.34668},
}