To cite RRF in publications use:

H. Deng and G. Runger (2012). Gene Selection with Guided Regularized Random Forest. Technical Report.
H. Deng and G. Runger (2012). Feature Selection via Regularized Trees. The 2012 International Joint Conference on Neural Networks (IJCNN).

Corresponding BibTeX entries:

  @Article{,
    title = {Gene Selection with Guided Regularized Random Forest},
    author = {Houtao Deng and George Runger},
    journal = {Technical Report},
    year = {2012},
  }
  @Article{,
    title = {Feature Selection via Regularized Trees},
    author = {Houtao Deng and George Runger},
    journal = {The 2012 International Joint Conference on Neural
      Networks (IJCNN)},
    year = {2012},
  }