FUNCTIONS

FitARMA			MLE for ARMA
GetFitARMA		MLE for mean zero ARMA model
GetFitARMAMean		MLE for mean and ARMA model
HRARMA			Hannan-Rissanen estimator for ARMA 
ImpulseCoefficientsARMA	MA expansion coefficients
InformationMatrixARMA	information matrix
SimulateGaussianARMA	simulation
TacvfARMA		theoretical autocovariances, ARMA
tccf			utility function, InformationMatrixARMA

		METHODS
print.FitARMA		print method
summary.FitARMA		summary method
coef.FitARMA		coef method
residuals.FitARMA	residuals method
fitted.FitARMA		fitted method