@article{4713,
  author = {V. Dzuba and Victor Flambaum and P. Silvestrov and O. Sushkov},
  title = {Many-body perturbation-theory calculations in atoms with open shells},
  year = {1991},
  journal = {Physical Review A},
  volume = {44},
  pages = {2828-2831},
  month = {Jan-09-1991},
  issn = {1050-2947},
  url = {http://link.aps.org/doi/10.1103/PhysRevA.44.2828},
  doi = {10.1103/PhysRevA.44.2828},
}