To cite B2Z in publications use:

Joao Vitor Dias Monteiro, Sudipto Banerjee, Gurumurthy Ramachandran (2011). B2Z: An R Package for Bayesian Two-Zone Models. Journal of Statistical Software, 43(2), 1-23. URL http://www.jstatsoft.org/v43/i02/.

Corresponding BibTeX entry:

  @Article{,
    title = {{B2Z}: An {R} Package for Bayesian Two-Zone Models},
    author = {Joao Vitor {Dias Monteiro} and Sudipto Banerjee and
      Gurumurthy Ramachandran},
    journal = {Journal of Statistical Software},
    year = {2011},
    volume = {43},
    number = {2},
    pages = {1--23},
    url = {http://www.jstatsoft.org/v43/i02/},
  }