@article{anefficienttwostagesparserepresentation,
  title = {An Efficient Two-Stage Sparse Representation Method},
  author = {Chengyu Peng and Hong Cheng and Manchor Ko},
  year = {2014},
  eprint = {1404.1129},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1404.1129v2},
}