To cite package ‘iterpc’ in publications use:

Lai R (2020). iterpc: Efficient Iterator for Permutations and Combinations. R package version 0.4.2, https://github.com/randy3k/iterpc.

Corresponding BibTeX entry:

  @Manual{,
    title = {iterpc: Efficient Iterator for Permutations and
      Combinations},
    author = {Randy Lai},
    year = {2020},
    note = {R package version 0.4.2},
    url = {https://github.com/randy3k/iterpc},
  }