TY  - RPRT
TI  - On Quantum-Mechanical Methods in Valence Theory.
AU  - R G Parr
AU  - B L Crawford
PY  - 1952
DO  - 10.1073/pnas.38.6.547
UR  - https://pubmed.ncbi.nlm.nih.gov/16589144/
ID  - 16589144
ER  -