@article{10924,
  author = {F. Rohrlich and C. Pecker},
  title = {Highly Ionized Atoms. The Configurations S2PN (N = 1, 2, 4, 5)},
  year = {1963},
  journal = {Astrophysical Journal},
  volume = {138},
  note = {JILA Pub. 61},
}