To cite package 'irace' in publications use:

López-Ibáñez M, Dubois-Lacoste J, Pérez Cáceres L, Stützle T, Birattari M (2016). “The irace package: Iterated Racing for Automatic Algorithm Configuration.” Operations Research Perspectives, 3, 43–58. doi:10.1016/j.orp.2016.09.002.

Corresponding BibTeX entry:

  @Article{,
    title = {The irace package: Iterated Racing for Automatic Algorithm
      Configuration},
    author = {Manuel López-Ibáñez and Jérémie Dubois-Lacoste and Leslie
      {Pérez Cáceres} and Thomas Stützle and Mauro Birattari},
    year = {2016},
    journal = {Operations Research Perspectives},
    doi = {10.1016/j.orp.2016.09.002},
    volume = {3},
    pages = {43--58},
  }