To cite zenplots in publications use:

Hofert M, Oldford W (2020). “Zigzag Expanded Navigation Plots in R: The R Package zenplots.” Journal of Statistical Software, 95(4), 1–44. doi: 10.18637/jss.v095.i04.

Corresponding BibTeX entry:

  @Article{,
    title = {Zigzag Expanded Navigation Plots in {R}: The {R} Package
      {zenplots}},
    author = {Marius Hofert and Wayne Oldford},
    journal = {Journal of Statistical Software},
    year = {2020},
    volume = {95},
    number = {4},
    pages = {1--44},
    doi = {10.18637/jss.v095.i04},
  }