To cite package ‘TestFunctions’ in publications use:

Erickson C (2024). TestFunctions: Test Functions for Simulation Experiments and Evaluating Optimization and Emulation Algorithms. R package version 0.2.2.9000, https://github.com/collinerickson/testfunctions.

Corresponding BibTeX entry:

  @Manual{,
    title = {TestFunctions: Test Functions for Simulation Experiments
      and Evaluating Optimization and Emulation Algorithms},
    author = {Collin Erickson},
    year = {2024},
    note = {R package version 0.2.2.9000},
    url = {https://github.com/collinerickson/testfunctions},
  }