To cite the varbvs package in publications use:

Peter Carbonetto and Matthew Stephens (2012). Scalable variational inference for Bayesian variable selection in regression, and its accuracy in genetic association studies. Bayesian Analysis 7(1), pages 73-108.

Corresponding BibTeX entry:

  @Article{,
    title = {Scalable variational inference for Bayesian variable
      selection in regression, and its accuracy in genetic association
      studies},
    author = {Peter Carbonetto and Matthew Stephens},
    journal = {Bayesian Analysis},
    volume = {7},
    number = {1},
    pages = {73--108},
    year = {2012},
  }