@misc{indiciae1a1373d6979e,
  title = {On Quantum-Mechanical Methods in Valence Theory.},
  author = {R G Parr and B L Crawford},
  year = {1952},
  doi = {10.1073/pnas.38.6.547},
  url = {https://pubmed.ncbi.nlm.nih.gov/16589144/},
  note = {Source identifier: 16589144}
}