@misc{indiciae49fe098c6ca3,
  title = {Perturbation theory for strongly interacting atomic systems.},
  author = {K Taulbjerg and RO Barrachina and JH Macek},
  year = {1990},
  doi = {10.1103/physreva.41.207},
  url = {https://pubmed.ncbi.nlm.nih.gov/9902861/},
  note = {Source identifier: 9902861}
}