@INPROCEEDINGS {4296,
author={João R. Canto and C. R. Paiva and A. Barbosa},
doi={},
booktitle={Encuentro Ibérico de Electromagnetismo Computacional - EIEC},
title={Forbidden bands in periodic multilayered structures containing DNG media},
year={2007},
month={April},
volume={-},
pages={---} 
}
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