@INPROCEEDINGS {4316,
author={M.  Ribeiro and S.A. Matos and C. R. Paiva},
doi={},
booktitle={International Symp. on Antennas and Propagation - ISAP},
title={A geometric algebra approach to anisotropic media},
year={2007},
month={June},
volume={-},
pages={---} 
}
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