@ARTICLE {2233,
author={S.A. Matos and M.  Ribeiro and C. R. Paiva},
doi={},
journal={Optics Express},
title={Anisotropy without tensors: a novel approach using geometric algebra},
year={2007},
month={November},
volume={15},
number={23},
pages={15175-15186},
ISSN={}
}