@article{flexiblemultilayersparseapproximationsof,
  title = {Flexible Multi-layer Sparse Approximations of Matrices and Applications},
  author = {Luc Le Magoarou and Rémi Gribonval},
  year = {2015},
  eprint = {1506.07300},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1506.07300v2},
}