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

  Schwendinger F (2023). _ROI.plugin.highs: 'HiGHS' Plugin for the 'R'
  Optimization Infrastructure_. R package version 1.0-3,
  <https://CRAN.R-project.org/package=ROI.plugin.highs>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ROI.plugin.highs: 'HiGHS' Plugin for the 'R' Optimization Infrastructure},
    author = {Florian Schwendinger},
    year = {2023},
    note = {R package version 1.0-3},
    url = {https://CRAN.R-project.org/package=ROI.plugin.highs},
  }