exportPattern("^[[:alpha:]]+")
importFrom("utils", "data", "setTxtProgressBar", "txtProgressBar")
importFrom("MASS","rlm")
importFrom("MASS","psi.huber")
importFrom("MASS","psi.bisquare")
importFrom("stats", "lm", "median")
importFrom("graphics", "axis", "legend")
importFrom("stats", "mad", "pacf", "uniroot", "var")
import("tseries")
export(eff,ESL_O)
export(rho.h,psi.Huber,dpsi.Huber)
export(rho.b,psi.Tukey,dpsi.Tukey)
export(rho.e,psi.Exp,dpsi.Exp)
export(chi,create_lag)

