@INPROCEEDINGS {7378,
author={A. Topa and C. R. Paiva and A. Barbosa},
doi={},
booktitle={Progress in Electromagnetics Research Symp. - PIERS},
title={New NRD-waveguide Devices Using Metamaterials},
year={2009},
month={August},
volume={1},
pages={1-1} 
}