@misc{indiciae69c10438eb01,
  title = {Precise density-functional method for periodic structures.},
  author = {te Velde G and EJ Baerends},
  year = {1991},
  doi = {10.1103/physrevb.44.7888},
  url = {https://pubmed.ncbi.nlm.nih.gov/9998719/},
  note = {Source identifier: 9998719}
}