To cite the 'epsiwal' package in publications use:

Pav SE (2019). epsiwal: Exact Post Selection Inference with Applications to the Lasso. R package version 0.1.0, https://github.com/shabbychef/epsiwal.

Corresponding BibTeX entry:

  @Manual{epsiwal-Manual,
    title = {{epsiwal}: Exact Post Selection Inference with
      Applications to the {L}asso},
    author = {Steven E. Pav},
    year = {2019},
    note = {R package version 0.1.0},
    url = {https://github.com/shabbychef/epsiwal},
  }