Open Access
Issue
EPJ Applied Metamaterials
Volume 1, 2014
Article Number 5
Number of page(s) 9
DOI http://dx.doi.org/10.1051/epjam/2014004
Published online 08 July 2014

© R.W. Ziolkowski, Published by EDP Sciences, 2014

Licence Creative Commons
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.