TY  - RPRT
TI  - Ab initio valence-bond cluster model for ionic solids: Alkaline-earth oxides.
AU  - A Lorda
AU  - F Illas
AU  - J Rubio
AU  - JB Torrance
PY  - 1993
DO  - 10.1103/physrevb.47.6207
UR  - https://pubmed.ncbi.nlm.nih.gov/10004584/
ID  - 10004584
ER  -