@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}
}

@article{friedman2008sparse,
  title     = {Sparse inverse covariance estimation with the graphical lasso},
  author    = {Friedman, Jerome and Hastie, Trevor and Tibshirani, Robert},
  journal   = {Biostatistics},
  volume    = {9},
  number    = {3},
  pages     = {432--441},
  year      = {2008},
  publisher = {Oxford University Press},
  url       = {https://academic.oup.com/biostatistics/article/9/3/432/224260}
}