@article{11404,
  author = {H. Kleinpoppen and Eberhard Kraiss},
  title = {Cross Section and Polarization of the H_α Line by Electron Impact Excitation},
  year = {1968},
  journal = {Physical Review Letters},
  volume = {20},
  pages = {361-363},
  month = {Jan-02-1968},
  issn = {0031-9007},
  url = {http://link.aps.org/doi/10.1103/PhysRevLett.20.361},
  doi = {10.1103/PhysRevLett.20.361},
}