When using R2BayesX/BayesXsrc in publications, please cite both the R interface and BayesX itself:

Nikolaus Umlauf, Daniel Adler, Thomas Kneib, Stefan Lang, Achim Zeileis (2015). Structured Additive Regression Models: An R Interface to BayesX. Journal of Statistical Software, 63(21), 1-46. URL http://www.jstatsoft.org/v63/i21/.

Christiane Belitz, Andreas Brezger, Thomas Kneib, Stefan Lang, Nikolaus Umlauf (2018). BayesX: Software for Bayesian Inference in Structured Additive Regression Models. Version 3.0. URL http://www.BayesX.org/

Corresponding BibTeX entries:

  @Article{,
    title = {Structured Additive Regression Models: An {R} Interface to
      {BayesX}},
    author = {Nikolaus Umlauf and Daniel Adler and Thomas Kneib and
      Stefan Lang and Achim Zeileis},
    journal = {Journal of Statistical Software},
    year = {2015},
    volume = {63},
    number = {21},
    pages = {1--46},
    url = {http://www.jstatsoft.org/v63/i21/},
  }

  @Manual{,
    title = {{BayesX}: Software for {B}ayesian Inference in Structured
      Additive Regression Models},
    author = {Christiane Belitz and Andreas Brezger and Thomas Kneib
      and Stefan Lang and Nikolaus Umlauf},
    year = {2018},
    note = {Version 3.0},
    url = {http://www.BayesX.org/},
  }