@article{JMLR:v15:hsieh14a,
  author  = {Cho-Jui Hsieh and M{{\'a}}ty{{\'a}}s A. Sustik and Inderjit S. Dhillon and Pradeep Ravikumar},
  title   = {QUIC: Quadratic Approximation for Sparse Inverse Covariance Estimation},
  journal = {Journal of Machine Learning Research},
  year    = {2014},
  volume  = {15},
  number  = {83},
  pages   = {2911--2947},
  url     = {http://jmlr.org/papers/v15/hsieh14a.html}
}