@Article{strasserweber1999,
  key =          448,
  author =       {Helmut Strasser and Christian Weber},
  title =        {On the Asymptotic Theory of Permutation Statistics},
  journal =      {Mathematical Methods of Statistics},
  pages =        {220-250},
  year =         1999,
  volume =       8,
  note =         {Preprint available from \url{https://epub.wu.ac.at/102}}
}

@Article{Hothorn+Hornik+Wiel+Zeileis:2006,
  author = {Torsten Hothorn and Kurt Hornik and
            Mark A. van de Wiel and Achim Zeileis}, 
  title = {A {L}ego System for Conditional Inference}, 
  journal = {The American Statistician},
  year = {2006}, 
  volume = {60}, 
  number = {3}, 
  pages = {257--263}, 
  doi = {10.1198/000313006X118430}, 
}

@article{Hothorn+Hornik+VanDeWiel:2008,
  author = {Torsten Hothorn and Kurt Hornik and
            Mark A. van de Wiel and Achim Zeileis},
  title = {Implementing a Class of Permutation Tests: The coin Package},
  year = 2008,
  journal = {Journal of Statistical Software},
  volume = 28,
  number = 8, 
  pages = {1--23},
  doi = {10.18637/jss.v028.i08},
}