@inproceedings{bigquicsparseinversecovarianceestimation,
  title = {BIG & QUIC: Sparse Inverse Covariance Estimation for a Million Variables},
  author = {Cho-Jui Hsieh and Matyas A. Sustik and Inderjit S. Dhillon and Pradeep K. Ravikumar and Russell Poldrack},
  year = {2013},
  booktitle = {NeurIPS 2013 12},
  url = {http://papers.nips.cc/paper/4923-big-quic-sparse-inverse-covariance-estimation-for-a-million-variables},
}