To cite PMwR in publications, please use:

Schumann E (2008–2018). Portfolio Management with R. http://enricoschumann.net/PMwR/.

Corresponding BibTeX entry:

  @Manual{,
    title = {Portfolio Management with {R}},
    author = {Enrico Schumann},
    year = {2008--2018},
    url = {http://enricoschumann.net/PMwR/},
  }