@misc{indiciaefeb731071b04,
  title = {"Singular factor" method for electronic-structure calculations.},
  author = {NA Holzwarth and S Azhar and TJ Kerr},
  year = {1988},
  doi = {10.1103/physrevb.38.9409},
  url = {https://pubmed.ncbi.nlm.nih.gov/9945754/},
  note = {Source identifier: 9945754}
}