To cite package ‘blox’ in publications use:

  Bauer J (2025). _blox: Block Diagonal Matrix Approximation_. R
  package version 0.0.1, <https://CRAN.R-project.org/package=blox>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {blox: Block Diagonal Matrix Approximation},
    author = {Jan O. Bauer},
    year = {2025},
    note = {R package version 0.0.1},
    url = {https://CRAN.R-project.org/package=blox},
  }