@article{hodgson2017interatomic,
  title={How interatomic steps in the exact Kohn--Sham potential relate to derivative discontinuities of the energy},
  author={Hodgson, Matthew J P and Kraisler, Eli and Schild, Axel and Gross, Eberhard K U},
  journal={The journal of physical chemistry letters},
  volume={8},
  number={24},
  pages={5974--5980},
  year={2017},
  publisher={ACS Publications}
}