@misc{indiciae6fe97d8c1bb5,
  title = {Extended projector method: Application to Jahn-Teller and pseudo-Jahn-Teller systems.},
  author = {M Vanhimbeeck and De Raedt H and D Schoemaker},
  year = {1988},
  doi = {10.1103/physreva.38.5021},
  url = {https://pubmed.ncbi.nlm.nih.gov/9900221/},
  note = {Source identifier: 9900221}
}