@misc{indiciae091b0f3616ff,
  title = {Woodward-Hoffmann rules in density functional theory: initial hardness response.},
  author = {Frank De Proft and Paul W Ayers and Stijn Fias and Paul Geerlings},
  year = {2006},
  doi = {10.1063/1.2387953},
  url = {https://pubmed.ncbi.nlm.nih.gov/17166009/},
  note = {Source identifier: 17166009}
}