Lutkepohl, Helmut. Forecasting aggregated vector ARMA processes / Helmut Lutkepohl. - Berlin ; New York : Springer-Verlag, c1987. - x, 323 p. : ill. ; 25 cm. - Lecture notes in economics and mathematical systems 284 . Bibliography: p. [316]-323. ISBN: 0387172084 (U.S. : pbk.) : 3540172084 Subjects--Topical Terms: Time-series analysis.Econometrics.Economic forecasting--Statistical methods