To cite package ‘snfa’ in publications use:

McKenzie T (2020). snfa: Smooth Non-Parametric Frontier Analysis. R package version 0.0.1.9000, https://github.com/tkmckenzie/snfa.

Corresponding BibTeX entry:

  @Manual{,
    title = {snfa: Smooth Non-Parametric Frontier Analysis},
    author = {Taylor McKenzie},
    year = {2020},
    note = {R package version 0.0.1.9000},
    url = {https://github.com/tkmckenzie/snfa},
  }