To cite RobPer in publications use:

Thieler AM, Fried R, Rathjens J (2016). “RobPer: An R Package to Calculate Periodograms for Light Curves Based on Robust Regression.” Journal of Statistical Software, 69(9), 1–36. doi:10.18637/jss.v069.i09.

Corresponding BibTeX entry:

  @Article{,
    title = {{RobPer}: An {R} Package to Calculate Periodograms for
      Light Curves Based on Robust Regression},
    author = {Anita M. Thieler and Roland Fried and Jonathan Rathjens},
    journal = {Journal of Statistical Software},
    year = {2016},
    volume = {69},
    number = {9},
    pages = {1--36},
    doi = {10.18637/jss.v069.i09},
  }