To cite walkr in publications use:

Andy Yao, David Kane (2015). walkr: Random Walks in the Intersection of Hyperplanes and the N-Simplex. CRAN. URL https://CRAN.R-project.org/package=walkr.

Corresponding BibTeX entry:

  @Manual{,
    title = {{walkr}: Random Walks in the Intersection of Hyperplanes
      and the N-Simplex},
    author = {Andy Yao and David Kane},
    year = {2015},
    url = {https://CRAN.R-project.org/package=walkr},
  }