To cite OneStep in publications use:

Alexandre B, Darel N, Christophe D (2020). OneStep: One-step Estimation. R package version 0.9.1, https://CRAN.R-project.org/package=OneStep.

Corresponding BibTeX entry:

  @Manual{,
    title = {{OneStep}: One-step Estimation},
    author = {Brouste Alexandre and Noutsa Mieniedou Darel and Dutang
      Christophe},
    year = {2020},
    note = {R package version 0.9.1},
    url = {https://CRAN.R-project.org/package=OneStep},
  }