@misc{indiciae29a3d9124735,
  title = {Configuration interaction between doubly and singly excited bound states.},
  author = {TN Chang and RQ Wang},
  year = {1987},
  doi = {10.1103/physreva.36.3535},
  url = {https://pubmed.ncbi.nlm.nih.gov/9899290/},
  note = {Source identifier: 9899290}
}