@article{aprimaldualactivesetwithcontinuation,
  title = {A Primal Dual Active Set with Continuation Algorithm for the \ell^0-Regularized Optimization Problem},
  author = {Yuling Jiao and Bangti Jin and Xiliang Lu},
  year = {2014},
  eprint = {1403.0515},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1403.0515v1},
}