@ARTICLE {5537,
author={J. Costa and M. G. Silveirinha and A Alù},
doi={10.1103/PhysRevB.83.165120},
journal={Physical Review B - Condensed Matter and Materials Physics},
title={Poynting Vector in Negative-Index Metamaterials},
year={2011},
month={April},
volume={83},
number={165120},
pages={---},
ISSN={1098-0121}
}