@article{9808,
  author = {I. Percival},
  title = {Combined theory of classical excitation of atoms by charged particles},
  year = {1973},
  journal = {Journal of Physics B: Atomic and Molecular Physics},
  volume = {6},
  pages = {2236-2253},
  month = {Jan-11-1973},
  issn = {0022-3700},
  url = {http://stacks.iop.org/0022-3700/6/i=11/a=017?key=crossref.5c96bd6e5165edefdba14ffa3907f186},
  doi = {10.1088/0022-3700/6/11/017},
}