To cite package ‘bbotk’ in publications use:

  Becker M, Richter J, Lang M, Bischl B, Binder M (2025). _bbotk:
  Black-Box Optimization Toolkit_. R package version 1.5.0, ,
  <https://github.com/mlr-org/bbotk>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {bbotk: Black-Box Optimization Toolkit},
    author = {Marc Becker and Jakob Richter and Michel Lang and Bernd Bischl and Martin Binder},
    year = {2025},
    note = {R package version 1.5.0, },
    url = {https://github.com/mlr-org/bbotk},
  }