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