@article{sparsitybasedmethodsforoverparameterized,
  title = {Sparsity Based Methods for Overparameterized Variational Problems},
  author = {Raja Giryes and Michael Elad and Alfred M. Bruckstein},
  year = {2014},
  eprint = {1405.4969},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1405.4969v5},
}