1. Time Series Analysis Forecasting and Control;Box,1976
2. Unit roots it time series models: tests and implications;Dickey;Am. Statist,1986
3. Introduction to Statistical Time Series;Fuller,1976
4. SO2 emissions and time series models;Gleit;J. Air Pollut. Control Ass.,1985
5. Forecasting, Structural Time Series Models and the Kalman Filter;Harvey,1992