To cite concurve in publications use:

Chow Z, Vigotsky A (2019). concurve: Computes and Plots Compatibility (Confidence) Intervals, P-Values, S-Values, & Likelihood Intervals to Form Consonance, Surprisal, & Likelihood Functions. https://CRAN.R-project.org/package=concurve.

Corresponding BibTeX entry:

  @Manual{,
    title = {{concurve}: Computes and Plots Compatibility (Confidence)
      Intervals, P-Values, S-Values, & Likelihood Intervals to Form
      Consonance, Surprisal, & Likelihood Functions},
    author = {Zad R. Chow and Andrew D. Vigotsky},
    year = {2019},
    url = {https://CRAN.R-project.org/package=concurve},
  }