install.packages('coin')
"IndependenceLinearStatistic"
"SymmetryProblem"
"VarCovar"
and its subclasses"NullDistribution"
and its subclasses"IndependenceTestProblem"
"IndependenceTestStatistic"
and its subclasses"IndependenceTest"
and its subclasses"PValue"
"IndependenceProblem"