@ARTICLE {8821,
author={D. E. Fernandes and S. Maslovski  and M. G. Silveirinha},
doi={10.1109/TMTT.2013.2291539},
journal={IEEE Transactions on Microwave Theory and Techniques},
title={Asymmetric Mushroom-Type Metamaterials},
year={2014},
month={January},
volume={PP},
number={62},
pages={8-17},
ISSN={0018-9480}
}