@misc{indiciaea52610f100cb,
  title = {Augmented-plane-wave forces.},
  author = {JM Soler and AR Williams},
  year = {1990},
  doi = {10.1103/physrevb.42.9728},
  url = {https://pubmed.ncbi.nlm.nih.gov/9995222/},
  note = {Source identifier: 9995222}
}