TY  - RPRT
TI  - Finite-element-method expectation values for correlated two-electron wave functions.
AU  - J Ackermann
PY  - 1995
DO  - 10.1103/physreva.52.1968
UR  - https://pubmed.ncbi.nlm.nih.gov/9912455/
ID  - 9912455
ER  -