@misc{indiciaedc56adc98602,
  title = {Possible rigid rotations in two-electron atoms.},
  author = {M Poirier},
  year = {1989},
  doi = {10.1103/physreva.40.3498},
  url = {https://pubmed.ncbi.nlm.nih.gov/9902563/},
  note = {Source identifier: 9902563}
}