@misc{indiciaeae685ddd3185,
  title = {Exchange-correlation-induced "negative effective U"},
  author = {H Katayama-Yoshida and A Zunger},
  year = {1985},
  doi = {10.1103/physrevlett.55.1618},
  url = {https://pubmed.ncbi.nlm.nih.gov/10031871/},
  note = {Source identifier: 10031871}
}