@article{graphicalnonconvexoptimizationforoptimal,
  title = {Graphical Nonconvex Optimization for Optimal Estimation in Gaussian Graphical Models},
  author = {Qiang Sun and Kean Ming Tan and Han Liu and Tong Zhang},
  year = {2017},
  eprint = {1706.01158},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1706.01158v1},
}