@article{PhysRevA.103.012806,
  title = {Exact exchange-correlation potentials for calculating the fundamental gap with a fixed number of electrons},
  author = {Hodgson, M. J. P. and Wetherell, J. and Fromager, Emmanuel},
  journal = {Phys. Rev. A},
  volume = {103},
  issue = {1},
  pages = {012806},
  numpages = {9},
  year = {2021},
  month = {Jan},
  publisher = {American Physical Society},
  doi = {10.1103/PhysRevA.103.012806},
  url = {https://link.aps.org/doi/10.1103/PhysRevA.103.012806}
}