@ARTICLE {30362,
author={F. Prudêncio and M. G. Silveirinha},
doi={10.1038/s42005-020-00482-3},
journal={Communications Physics},
title={First principles calculation of topological invariants of non-Hermitian photonic crystals},
year={2020},
month={December},
volume={3},
number={1},
pages={1-9},
ISSN={2399-3650}
}