To cite the R package BRugs in publications use:

Thomas A, O'Hara B, Ligges U, Sturtz S (2006). “Making BUGS Open.” R News, 6(1), 12–17. https://cran.r-project.org/doc/Rnews/.

Corresponding BibTeX entry:

  @Article{,
    title = {Making BUGS Open},
    author = {Andrew Thomas and Bob O'Hara and Uwe Ligges and Sibylle
      Sturtz},
    journal = {R News},
    year = {2006},
    pages = {12--17},
    number = {1},
    volume = {6},
    url = {https://cran.r-project.org/doc/Rnews/},
  }