TY  - RPRT
TI  - Why does electron sharing lead to covalent bonding? A variational analysis.
AU  - Klaus Ruedenberg
AU  - Michael W Schmidt
PY  - 2007
DO  - 10.1002/jcc.20553
UR  - https://pubmed.ncbi.nlm.nih.gov/17143869/
ID  - 17143869
ER  -