@article{173176,
  author = {Peter Mohr and J Sapirstein},
  title = {Evaluation of Two-Photon Exchange Graphs for Excited States of Highly Charged Heliumlike Ions},
  year = {2000},
  number = {62},
  month = {2000-11-01},
  publisher = {Physical Review A (Atomic, Molecular and Optical Physics)},
  language = {en},
}