@misc{indiciae217d1c2a661d,
  title = {Excited-state forces within a first-principles Green's function formalism.},
  author = {Sohrab Ismail-Beigi and Steven G Louie},
  year = {2003},
  doi = {10.1103/physrevlett.90.076401},
  url = {https://pubmed.ncbi.nlm.nih.gov/12633253/},
  note = {Source identifier: 12633253}
}