To cite the mppR package in publications use:

Garin V, Wimmer V, Borchardt D, Malosetti M, van Eeuwijk F (2018). mppR: Multi-Parent Population QTL Analysis. R package version 1.2.0

Corresponding BibTeX entry:

  @Manual{,
    title = {mppR: Multi-Parent Population QTL Analysis},
    author = {Garin V and Wimmer V and Borchardt D and van Eeuwijk F
      and Malosetti M},
    note = {R package version 1.2.0},
    year = {2018},
    url = {https://CRAN.R-project.org/package=mppR},
  }