@misc{indiciaecdbb3be81577,
  title = {Time-dependent density-functional theory in the linear-response regime.},
  author = {TK Ng and KS Singwi},
  year = {1987},
  doi = {10.1103/physrevlett.59.2627},
  url = {https://pubmed.ncbi.nlm.nih.gov/10035607/},
  note = {Source identifier: 10035607}
}