To cite siplab in publications use:

Oscar Garcia (2014). Siplab, a spatial individual-based plant modelling system. Computational Ecology and Software 4(4), 215-222. URL http://www.iaees.org/publications/journals/ces/online-version.asp .

Corresponding BibTeX entry:

  @Article{,
    title = {Siplab, a spatial individual-based plant modelling
      system},
    author = {Oscar Garcia},
    journal = {Computational Ecology and Software},
    year = {2014},
    volume = {4},
    number = {4},
    pages = {215--222},
    url =
      {http://www.iaees.org/publications/journals/ces/online-version.asp},
  }