@article{JMLR:v11:zhang10a,
  author  = {Tong Zhang},
  title   = {Analysis of Multi-stage Convex Relaxation for Sparse Regularization},
  journal = {Journal of Machine Learning Research},
  year    = {2010},
  volume  = {11},
  number  = {35},
  pages   = {1081--1107},
  url     = {http://jmlr.org/papers/v11/zhang10a.html}
}