TY  - RPRT
TI  - Operator approach in the linearized augmented-plane-wave method: Efficient electronic-structure calculations including forces.
AU  - S Goedecker
AU  - K Maschke
PY  - 1992
DO  - 10.1103/physrevb.45.1597
UR  - https://pubmed.ncbi.nlm.nih.gov/10001657/
ID  - 10001657
ER  -