@article{11008,
  author = {Lee Kieffer and Gordon Dunn},
  title = {Electron Impact Ionization Cross Section Data for Atoms, Atomic Ions and Diatomic Molecules: I. Experimental Data},
  year = {1965},
  number = {51},
  pages = {1-140},
  month = {1965-10},
  address = {Boulder},
  issn = {51},
}