Ferrari D, Jackson J (2019). ceser: Cluster Estimated Standard Errors in R. R package version 0.0.0.9000.

@Manual{,
  title = {ceser: Cluster Estimated Standard Errors in R},
  author = {Diogo Ferrari and John Jackson},
  year = {2019},
  note = {R package version 0.0.0.9000},
}