@article{kohn1965,
  title={Self-Consistent Equations Including Exchange and Correlation Effects},
  author={W. Kohn and L. J. Sham},
  year={1965},
  journal={Physical Review},
  doi={10.1103/physrev.140.a1133},
  url={https://doi.org/10.1103/physrev.140.a1133}
}