@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={2469-9950} }