To cite package ‘fPortfolio’ in publications use:

  Wuertz D, Setz T, Chalabi Y, Theussl S (2023). _fPortfolio: Rmetrics
  - Portfolio Selection and Optimization_. R package version
  4023.84.9000, <https://r-forge.r-project.org/projects/rmetrics>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {fPortfolio: Rmetrics - Portfolio Selection and Optimization},
    author = {Diethelm Wuertz and Tobias Setz and Yohan Chalabi and Stefan Theussl},
    year = {2023},
    note = {R package version 4023.84.9000},
    url = {https://r-forge.r-project.org/projects/rmetrics},
  }