@ARTICLE {5804,
author={J.   Nascimento and J. Bioucas-Dias},
doi={10.1109/TGRS.2011.2163941},
journal={IEEE Transactions on Geoscience and Remote Sensing},
title={Hyperspectral Unmixing based  on Mixtures of Dirichlet Components},
year={2012},
month={March},
volume={50},
number={3},
pages={863-878},
ISSN={0196-2892}
}