Simm J, de Abril I and Sugiyama M (2014). Tree-Based Ensemble Multi-Task Learning Method for Classification and Regression, volume 97 number 6. http://CRAN.R-project.org/package=extraTrees.

Corresponding BibTeX entry:

  @Manual{,
    title = {Tree-Based Ensemble Multi-Task Learning Method for
      Classification and Regression},
    author = {Jaak Simm and Ildefons Magrans {de Abril} and Masashi
      Sugiyama},
    volume = {97},
    number = {6},
    pages = {1677--1681},
    year = {2014},
    journal = {IEICE TRANSACTIONS on Information and Systems},
    publisher = {The Institute of Electronics, Information and
      Communication Engineers},
    url = {http://CRAN.R-project.org/package=extraTrees},
  }