If ctree() is used additionally cite: If mob() is used additionally
cite: If cforest() is used cite:

  Hothorn T, Hornik K, Zeileis A (2006). “Unbiased Recursive
  Partitioning: A Conditional Inference Framework.” _Journal of
  Computational and Graphical Statistics_, *15*(3), 651-674.
  doi:10.1198/106186006X133933
  <https://doi.org/10.1198/106186006X133933>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Unbiased Recursive Partitioning: A Conditional Inference Framework},
    author = {Torsten Hothorn and Kurt Hornik and Achim Zeileis},
    journal = {Journal of Computational and Graphical Statistics},
    year = {2006},
    volume = {15},
    number = {3},
    doi = {10.1198/106186006X133933},
    pages = {651--674},
  }

  Zeileis A, Hothorn T, Hornik K (2008). “Model-Based Recursive
  Partitioning.” _Journal of Computational and Graphical Statistics_,
  *17*(2), 492-514. doi:10.1198/106186008X319331
  <https://doi.org/10.1198/106186008X319331>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Model-Based Recursive Partitioning},
    author = {Achim Zeileis and Torsten Hothorn and Kurt Hornik},
    journal = {Journal of Computational and Graphical Statistics},
    year = {2008},
    volume = {17},
    number = {2},
    doi = {10.1198/106186008X319331},
    pages = {492--514},
  }

  Hothorn T, Buehlmann P, Dudoit S, Molinaro A, Van Der Laan M (2006).
  “Survival Ensembles.” _Biostatistics_, *7*(3), 355-373.
  doi:10.1093/biostatistics/kxj011
  <https://doi.org/10.1093/biostatistics/kxj011>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Survival Ensembles},
    author = {Torsten Hothorn and Peter Buehlmann and Sandrine Dudoit and Annette Molinaro and Mark {Van Der Laan}},
    journal = {Biostatistics},
    year = {2006},
    volume = {7},
    number = {3},
    pages = {355--373},
    doi = {10.1093/biostatistics/kxj011},
  }

  Strobl C, Boulesteix A, Zeileis A, Hothorn T (2007). “Bias in Random
  Forest Variable Importance Measures: Illustrations, Sources and a
  Solution.” _BMC Bioinformatics_, *8*(25). doi:10.1186/1471-2105-8-25
  <https://doi.org/10.1186/1471-2105-8-25>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Bias in Random Forest Variable Importance Measures: Illustrations, Sources and a Solution},
    author = {Carolin Strobl and Anne-Laure Boulesteix and Achim Zeileis and Torsten Hothorn},
    journal = {BMC Bioinformatics},
    year = {2007},
    volume = {8},
    number = {25},
    doi = {10.1186/1471-2105-8-25},
  }

  Strobl C, Boulesteix A, Kneib T, Augustin T, Zeileis A (2008).
  “Conditional Variable Importance for Random Forests.” _BMC
  Bioinformatics_, *9*(307). doi:10.1186/1471-2105-9-307
  <https://doi.org/10.1186/1471-2105-9-307>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Conditional Variable Importance for Random Forests},
    author = {Carolin Strobl and Anne-Laure Boulesteix and Thomas Kneib and Thomas Augustin and Achim Zeileis},
    journal = {BMC Bioinformatics},
    year = {2008},
    volume = {9},
    number = {307},
    doi = {10.1186/1471-2105-9-307},
  }