@INPROCEEDINGS {13621,
author={X. Zeng and M. A. T. Figueiredo},
doi={0},
booktitle={Workshop on Signal Processing with Adaptive Sparse Structured Representations - SPARS},
title={SPARsity and Clustering Regularization for Regression},
year={2013},
month={July},
volume={1},
pages={89-89} 
}