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