TY  - RPRT
TI  - Green's-function approach to linear response in solids.
AU  - S Baroni
AU  - P Giannozzi
AU  - A Testa
PY  - 1987
DO  - 10.1103/physrevlett.58.1861
UR  - https://pubmed.ncbi.nlm.nih.gov/10034557/
ID  - 10034557
ER  -