@article{sun2014structured,
  title={Structured Priors for Sparse-Representation-Based Hyperspectral Image Classification},
  author={Sun, Xiaoxia and Qu, Qing and Nasrabadi, Nasser M and Tran, Trac D},
  journal={IEEE Geoscience and Remote Sensing Letters}, 
  year={2014},
  volume={11},
  number={7},
  pages={1235-1239},
}