To cite package ‘quarks’ in publications use:

Letmathe S (2026). quarks: Simple Methods for Calculating and Backtesting Value at Risk and Expected Shortfall. R package version 1.1.6, https://github.com/letmode/quarks.

Corresponding BibTeX entry:

  @Manual{,
    title = {quarks: Simple Methods for Calculating and Backtesting
      Value at Risk and Expected Shortfall},
    author = {Sebastian Letmathe},
    year = {2026},
    note = {R package version 1.1.6},
    url = {https://github.com/letmode/quarks},
  }