To cite RRF in publications use:

H. Deng(2013). Guided Random Forest in the RRF Package. arXiv:1306.0237.
H. Deng and G. Runger (2013). Gene Selection with Guided Regularized Random Forest. Pattern Recognition 46(12): 3483-3489.
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 = {Guided Random Forest in the RRF Package},
    author = {Houtao Deng},
    journal = {arXiv:1306.0237},
    year = {2013},
  }
  @Article{,
    title = {Gene Selection with Guided Regularized Random Forest},
    author = {Houtao Deng and George Runger},
    journal = {Pattern Recognition},
    year = {2013},
    volume = {46},
    number = {12},
    pages = {3483-3489},
  }
  @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},
  }