To cite valr in publications use:

Riemondy et al. (2016). Genome Interval Arithmetic in R with valr.

Corresponding BibTeX entry:

  @Unpublished{,
    title = {Genome Interval Arithmetic in R with {valr}},
    author = {Ryan Sheridan and Kent Riemondy and Jay Hesselberth},
    note = {to be deposited in bioArxiv.},
  }