@Article{,
  title = {Various Versatile Variances: An Object-Oriented Implementation of Clustered Covariances in {R}},
  author = {Achim Zeileis and Susanne K\"oll and Nathaniel Graham},
  journal = {Journal of Statistical Software},
  year = {2020},
  volume = {95},
  number = {1},
  pages = {1--36},
  doi = {10.18637/jss.v095.i01},
}

@Article{,
  title = {Econometric Computing with {HC} and {HAC} Covariance Matrix Estimators},
  author = {Achim Zeileis},
  journal = {Journal of Statistical Software},
  year = {2004},
  volume = {11},
  number = {10},
  pages = {1--17},
  doi = {10.18637/jss.v011.i10},
}

@Article{,
  title = {Object-Oriented Computation of Sandwich Estimators},
  author = {Achim Zeileis},
  journal = {Journal of Statistical Software},
  year = {2006},
  volume = {16},
  number = {9},
  pages = {1--16},
  doi = {10.18637/jss.v016.i09},
}
  • Achim Zeileis. Author, maintainer.

  • Thomas Lumley. Author.

  • Nathaniel Graham. Contributor.

  • Susanne Koell. Contributor.