1. Time series analysis, forecasting and control;Box,1970
2. Changes in seasonal patterns: Are they cyclical?;Canova;Journal of Economic Dynamics and Control,1994
3. Are seasonal patterns constant over time? A test for seasonal stability;Canova;Journal of Business and Economic Statistics,1995
4. On estimating thresholds in autoregressive models;Chan;Journal of Time Series Analysis,1986
5. An empirical study of seasonal unit roots in forecasting;Clements;International Journal of Forecasting,1997