@misc{indiciaea9ad5367d368,
  title = {Generalized Levinson theorem: Applications to electron-atom scattering.},
  author = {L Rosenberg and L Spruch},
  year = {1996},
  doi = {10.1103/physreva.54.4985},
  url = {https://pubmed.ncbi.nlm.nih.gov/9914064/},
  note = {Source identifier: 9914064}
}