@article{11413,
  author = {R. Long and D. Cox and S. Smith},
  title = {Electron Impact Excitation of Hydrogen Lyman-Alpha Radiation},
  year = {1968},
  journal = {Journal of Research of the National Bureau of Standards},
  volume = {72},
  chapter = {521},
  pages = {521-535},
  note = {JILA Pub. 415},
}