TY  - RPRT
TI  - Exact density functionals for two-electron systems in an external magnetic field.
AU  - Wuming Zhu
AU  - S B Trickey
PY  - 2006
DO  - 10.1063/1.2222353
UR  - https://pubmed.ncbi.nlm.nih.gov/16965090/
ID  - 16965090
ER  -