@article{10997,
  author = {T. O'Malley and Sydney Geltman},
  title = {Compound-Atom States for Two-Electron Systems},
  year = {1965},
  journal = {Physical Review},
  volume = {137},
  pages = {A1344 - A1352},
  month = {1965-03},
  issn = {0031-899X},
  doi = {10.1103/PhysRev.137.A1344},
}