To cite DiceKriging in publications use:

Roustant O, Ginsbourger D, Deville Y (2012). “DiceKriging, DiceOptim: Two R Packages for the Analysis of Computer Experiments by Kriging-Based Metamodeling and Optimization.” Journal of Statistical Software, 51(1), 1–55. doi:10.18637/jss.v051.i01.

Corresponding BibTeX entry:

  @Article{,
    title = {{DiceKriging}, {DiceOptim}: Two {R} Packages for the
      Analysis of Computer Experiments by Kriging-Based Metamodeling
      and Optimization},
    author = {Olivier Roustant and David Ginsbourger and Yves Deville},
    journal = {Journal of Statistical Software},
    year = {2012},
    volume = {51},
    number = {1},
    pages = {1--55},
    doi = {10.18637/jss.v051.i01},
  }