@article{JMLR:v20:17-501,
  author  = {Salar Fattahi and Somayeh Sojoudi},
  title   = {Graphical Lasso and Thresholding: Equivalence and Closed-form Solutions},
  journal = {Journal of Machine Learning Research},
  year    = {2019},
  volume  = {20},
  number  = {10},
  pages   = {1--44},
  url     = {http://jmlr.org/papers/v20/17-501.html}
}