@misc{indiciae7216045a40b6,
  title = {Nonorthogonal basis sets in quantum mechanics: Representations and second quantization.},
  author = {E Artacho and Miláns del Bosch L},
  year = {1991},
  doi = {10.1103/physreva.43.5770},
  url = {https://pubmed.ncbi.nlm.nih.gov/9904902/},
  note = {Source identifier: 9904902}
}