Yamaka W, Maneejuk P, Kaewtathip N (2026). copulaSFM: Copula-Based Stochastic Frontier Models. R package version 0.2.0, https://CRAN.R-project.org/package=copulaSFM.

Corresponding BibTeX entry:

  @Manual{,
    title = {copulaSFM: Copula-Based Stochastic Frontier Models},
    author = {Woraphon Yamaka and Paravee Maneejuk and Nuttaphong
      Kaewtathip},
    year = {2026},
    note = {R package version 0.2.0},
    url = {https://CRAN.R-project.org/package=copulaSFM},
  }