@misc{indiciae08b680e1f45f, title = {Violation of sum rules by random-phase-approximation surface response calculations based on a density-functional ground-state description.}, author = {A Liebsch}, year = {1985}, doi = {10.1103/physrevb.32.6255}, url = {https://pubmed.ncbi.nlm.nih.gov/9936727/}, note = {Source identifier: 9936727} }