@article{6794,
  author = {H. van der Hart},
  title = {Energies of metastable 4So states in the alkaline-earth sequence},
  year = {1999},
  journal = {Physical Review A},
  volume = {59},
  pages = {1125-1130},
  month = {Jan-02-1999},
  issn = {1050-2947},
  url = {http://link.aps.org/doi/10.1103/PhysRevA.59.1125},
  doi = {10.1103/PhysRevA.59.1125},
}