@article{efficientelasticnetregularizationfor,
  title = {Efficient Elastic Net Regularization for Sparse Linear Models},
  author = {Zachary C. Lipton and Charles Elkan},
  year = {2015},
  eprint = {1505.06449},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1505.06449v3},
}