@ARTICLE {31937,
author={J. B. P.  Pendry and P. Huidobro and M. G. Silveirinha and E.  Galiffi},
doi={10.1515/nanoph-2021-0570},
journal={Nanophotonics},
title={Crossing the light line},
year={2021},
month={November},
volume={11},
number={1},
pages={161-167},
ISSN={2192-8606}
}