@inproceedings{newtonlikemethodsforsparseinverse,
  title = {Newton-Like Methods for Sparse Inverse Covariance Estimation},
  author = {Figen Oztoprak and Jorge Nocedal and Steven Rennie and Peder A. Olsen},
  year = {2012},
  booktitle = {NeurIPS 2012 12},
  url = {http://papers.nips.cc/paper/4601-newton-like-methods-for-sparse-inverse-covariance-estimation},
}