@misc{indiciae819e883129f2,
  title = {Ab initio valence-bond cluster model for ionic solids: Alkaline-earth oxides.},
  author = {A Lorda and F Illas and J Rubio and JB Torrance},
  year = {1993},
  doi = {10.1103/physrevb.47.6207},
  url = {https://pubmed.ncbi.nlm.nih.gov/10004584/},
  note = {Source identifier: 10004584}
}