To cite package ‘ROI.plugin.ipop’ in publications use:

  Schwendinger F, Theussl S (2024). _ROI.plugin.ipop: 'ipop' Plug-in
  for the 'R' Optimization Interface_. R package version 1.0-0, ,
  <https://r-forge.r-project.org/projects/roi>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ROI.plugin.ipop: 'ipop' Plug-in for the 'R' Optimization Interface},
    author = {Florian Schwendinger and Stefan Theussl},
    year = {2024},
    note = {R package version 1.0-0, 
},
    url = {https://r-forge.r-project.org/projects/roi},
  }