To cite package ‘rsppfp’ in publications use:

Vidoni M, Vecchietti A (2019). rsppfp: R's Shortest Path Problem with Forbidden Subpaths. R package version 1.0.4, https://github.com/melvidoni/rsppfp.

Corresponding BibTeX entry:

  @Manual{,
    title = {rsppfp: R's Shortest Path Problem with Forbidden
      Subpaths},
    author = {Melina Vidoni and Aldo Vecchietti},
    year = {2019},
    note = {R package version 1.0.4},
    url = {https://github.com/melvidoni/rsppfp},
  }