@article{11573,
  author = {Lee Kieffer},
  title = {Low-Energy Electron-Collision Cross-Section Data. Part II: Electronic-Excitation Cross Sections},
  year = {1969},
  journal = {Atomic Data and Nuclear Data Tables},
  volume = {1},
  pages = {121-287},
  month = {Jan-09-1969},
  issn = {0092640X},
  doi = {10.1016/S0092-640X(69)80023-9},
}