import(MASS,nlme,car)
export(gma,sim.data.ts.single,sim.data.ts.two)
importFrom("nlme","gls","intervals")
importFrom("graphics", "abline", "legend", "lines", "plot", "points","polygon")
importFrom("stats", "coef", "confint", "lm", "logLik", "optimize","qnorm", "rnorm", "update")
