@article{10254,
  author = {T. Burnett and S. Rountree and Gary Doolen and W. Robb},
  title = {Differential cross sections for electron-impact ionization of helium},
  year = {1976},
  journal = {Physical Review A},
  volume = {13},
  pages = {626-631},
  month = {Jan-02-1976},
  issn = {0556-2791},
  url = {http://link.aps.org/doi/10.1103/PhysRevA.13.626},
  doi = {10.1103/PhysRevA.13.626},
}