To cite R/ctl in publications use:

Arends et al. (2012) Correlated Trait Loci (CTL) mapping. Nucl. Acids Res. 00:000-000

Corresponding BibTeX entry:

  @Article{,
    title = {Correlated Trait Loci {CTL} mapping},
    author = {Danny Arends and Pjotr Prins and Ritsert C. Jansen},
    journal = {Nucl. Acids Res.},
    year = {2012},
    volume = {0},
    pages = {000-000},
  }