To cite R2GUESS in publications use:

Benoit Liquet, Leonardo Bottolo, Gianluca Campanella, Sylvia Richardson, Marc Chadeau-Hyam (2016). R2GUESS: A Graphics Processing Unit-Based R Package for Bayesian Variable Selection Regression of Multivariate Responses. Journal of Statistical Software, 69(2), 1-34.<doi:10.18637/jss.v069.i02>

Corresponding BibTeX entry:

  @Article{,
    title = {{R2GUESS}: A Graphics Processing Unit-Based {R} Package
      for Bayesian Variable Selection Regression of Multivariate
      Responses},
    author = {Beno\^{i}t Liquet and Leonardo Bottolo and Gianluca
      Campanella and Sylvia Richardson and Marc Chadeau-Hyam},
    journal = {Journal of Statistical Software},
    year = {2016},
    volume = {69},
    number = {2},
    pages = {1--34},
    doi = {10.18637/jss.v069.i02},
  }