@article{liu2017tiger,
  title   = {TIGER: A tuning-insensitive approach for optimally estimating Gaussian graphical models},
  author  = {Liu, Han and Wang, Lie},
  journal = {Electronic Journal of Statistics},
  volume  = {11},
  pages   = {241--294},
  year    = {2017},
  url     = {https://projecteuclid.org/journals/electronic-journal-of-statistics/volume-11/issue-1/TIGER--A-tuning-insensitive-approach-for-optimally-estimating-Gaussian/10.1214/16-EJS1195.full}
}

@article{zhao2012huge,
  title     = {The huge package for high-dimensional undirected graph estimation in R},
  author    = {Zhao, Tuo and Liu, Han and Roeder, Kathryn and Lafferty, John and Wasserman, Larry},
  journal   = {The Journal of Machine Learning Research},
  volume    = {13},
  number    = {1},
  pages     = {1059--1062},
  year      = {2012},
  publisher = {JMLR.org},
  url       = {https://www.jmlr.org/papers/volume13/zhao12a/zhao12a.pdf}
}