@ARTICLE {27780,
author={M. G. Silveirinha},
doi={10.1103/PhysRevB.97.115146},
journal={Physical Review B},
title={Topological classification of Chern-type insulators by means of the photonic Green function},
year={2018},
month={March},
volume={97},
number={115146},
pages={1-15},
ISSN={1098-0121}
}