export(GRS.test, GRS.MLtest, GRS.optimal, GRS.Power, GRS.Powerfunc, GRS.T, GRS.optimalboot, GRS.optimalweight, GRS.optimalbootweight) 
importFrom("graphics", "abline", "plot", "points", "polygon","par")
importFrom("stats", "cov", "df", "pf", "pt", "qf", "dnorm", "quantile","density", "runif")
importFrom("utils", "tail")
