To cite package ‘optimflex’ in publications use:

Cho E (2026). optimflex: Derivative-Based Optimization with User-Defined Convergence Criteria. R package version 0.1.7, https://github.com/eunscho/optimflex.

Corresponding BibTeX entry:

  @Manual{,
    title = {optimflex: Derivative-Based Optimization with User-Defined
      Convergence Criteria},
    author = {Eunseong Cho},
    year = {2026},
    note = {R package version 0.1.7},
    url = {https://github.com/eunscho/optimflex},
  }