TY  - RPRT
TI  - Generalization of the optimized-effective-potential model to include electron correlation: A variational derivation of the Sham-Schlüter equation for the exact exchange-correlation potential.
AU  - ME Casida
PY  - 1995
DO  - 10.1103/physreva.51.2005
UR  - https://pubmed.ncbi.nlm.nih.gov/9911812/
ID  - 9911812
ER  -