@article{JMLR:v13:yuan12a,
  author  = {Guo-Xun Yuan and Chia-Hua Ho and Chih-Jen Lin},
  title   = {An Improved GLMNET for L1-regularized Logistic Regression},
  journal = {Journal of Machine Learning Research},
  year    = {2012},
  volume  = {13},
  number  = {64},
  pages   = {1999--2030},
  url     = {http://jmlr.org/papers/v13/yuan12a.html}
}