To cite package 'GA' in publications use:

Luca Scrucca (2013). GA: A Package for Genetic Algorithms in R. Journal of Statistical Software, 53(4), 1-37. URL http://www.jstatsoft.org/v53/i04/.

Luca Scrucca (2016). On some extensions to GA package: hybrid optimisation, parallelisation and islands evolution. Submitted to R Journal. Pre-print available at arXiv URL http://arxiv.org/abs/1605.01931.

Corresponding BibTeX entries:

  @Article{,
    title = {{GA}: A Package for Genetic Algorithms in {R}},
    author = {Luca Scrucca},
    journal = {Journal of Statistical Software},
    year = {2013},
    volume = {53},
    number = {4},
    pages = {1--37},
    url = {http://www.jstatsoft.org/v53/i04/},
  }
  @Article{,
    title = {On some extensions to {GA} package: hybrid optimisation,
      parallelisation and islands evolution},
    author = {Luca Scrucca},
    journal = {Submitted to R Journal},
    year = {2016},
    url = {http://arxiv.org/abs/1605.01931},
    note = {Pre-print available at arXiv},
  }