@INPROCEEDINGS {6407,
author={M.  Ribeiro and C. R. Paiva},
doi={},
booktitle={Metamorphose International Congress on Advanced Electromagnetic Materials in Microwaves and Optics - METAMATERIALS},
title={Negative Refraction in Moving Media Through Spacetime Algebra},
year={2008},
month={September},
volume={--},
pages={-----} 
}
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