To cite rFerns in publications use:

Kursa MB (2014). “rFerns: An Implementation of the Random Ferns Method for General-Purpose Machine Learning.” Journal of Statistical Software, 61(10), 1–13. https://www.jstatsoft.org/v61/i10/.

Corresponding BibTeX entry:

  @Article{,
    title = {rFerns: An Implementation of the Random Ferns Method for
      General-Purpose Machine Learning},
    author = {Miron B. Kursa},
    journal = {Journal of Statistical Software},
    year = {2014},
    volume = {61},
    number = {10},
    pages = {1--13},
    url = {https://www.jstatsoft.org/v61/i10/},
  }