To cite package ‘Cluster.OBeu’ in publications use:

  Koupidis K, Bratsas C (2026). _Cluster.OBeu: Cluster Analysis
  'OpenBudgets.eu'_. R package version 1.2.3,
  <https://github.com/okgreece/cluster.obeu>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {Cluster.OBeu: Cluster Analysis 'OpenBudgets.eu'},
    author = {Kleanthis Koupidis and Charalampos Bratsas},
    year = {2026},
    note = {R package version 1.2.3},
    url = {https://github.com/okgreece/cluster.obeu},
  }