This paper provides a survey of the recent literature dealing with 1(2) variables in economic time series, that is, processes that require to be differenced twice in order to become stationary. With reference to particular models intuition is provided of why 1(2) and polynomial cointegration are features likely to occur in economics.
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Paper provided by School of Economics and Management, University of Aarhus in its series Economics Working Papers with number
1997-12.
Find related papers by JEL classification: C32 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Time-Series Models; Dynamic Quantile Regressions C40 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: Special Topics - - - General
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