@article{robustpiecewiseconstantsmoothingm,
  title = {Robust Piecewise-Constant Smoothing: M-Smoother Revisited},
  author = {Linchao Bao and Qingxiong Yang},
  year = {2014},
  eprint = {1410.7580},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1410.7580v2},
}