TY  - RPRT
TI  - Validity of the extended electron-electron cusp condition.
AU  - K Burke
AU  - JC Angulo
AU  - JP Perdew
PY  - 1994
DO  - 10.1103/physreva.50.297
UR  - https://pubmed.ncbi.nlm.nih.gov/9910892/
ID  - 9910892
ER  -