To cite package ‘npExact’ in publications use:

Reiter O, Schlag K (2018). npExact: Exact Nonparametric Hypothesis Tests for the Mean, Variance and Stochastic Inequality. R package version 0.2, https://github.com/zauster/npexact.

Corresponding BibTeX entry:

  @Manual{,
    title = {npExact: Exact Nonparametric Hypothesis Tests for the
      Mean, Variance and Stochastic Inequality},
    author = {Oliver Reiter and Karl Schlag},
    year = {2018},
    note = {R package version 0.2},
    url = {https://github.com/zauster/npexact},
  }