TY  - RPRT
TI  - A practical valence bond method: a configuration interaction method approach with perturbation theoretic facility.
AU  - Lingchun Song
AU  - Wei Wu
AU  - Qianer Zhang
AU  - Sason Shaik
PY  - 2004
DO  - 10.1002/jcc.10382
UR  - https://pubmed.ncbi.nlm.nih.gov/14735567/
ID  - 14735567
ER  -