To cite businessPlanR in publications use:

Michalke M (2023). businessPlanR: Simple Modelling Tools for Business Plans. (Version 0.1-0), https://www.c3s.cc.

Corresponding BibTeX entry:

  @Manual{,
    title = {businessPlanR: Simple Modelling Tools for Business Plans},
    author = {Meik Michalke},
    year = {2023},
    note = {(Version 0.1-0)},
    url = {https://www.c3s.cc},
  }