To cite OjaNP in publications use:

  Fischer D, Mosler K, Möttönen J, Nordhausen K, Pokotylo O, Vogel D
  (2020). “Computing the Oja Median in R: The Package OjaNP.” _Journal
  of Statistical Software_, *92*(8), 1-36. doi:10.18637/jss.v092.i08
  <https://doi.org/10.18637/jss.v092.i08>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Computing the Oja Median in {R}: The Package {OjaNP}},
    author = {Daniel Fischer and Karl Mosler and Jyrki M\"ott\"onen and Klaus Nordhausen and Oleksii Pokotylo and Daniel Vogel},
    journal = {Journal of Statistical Software},
    year = {2020},
    volume = {92},
    number = {8},
    pages = {1--36},
    doi = {10.18637/jss.v092.i08},
  }