To cite package ‘bbotk’ in publications use:

  Becker M, Richter J, Lang M, Bischl B, Binder M (2024). _bbotk:
  Black-Box Optimization Toolkit_. R package version 1.1.0,
  <https://CRAN.R-project.org/package=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 = {2024},
    note = {R package version 1.1.0},
    url = {https://CRAN.R-project.org/package=bbotk},
  }