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		| Luis  Gil-Alana | 
	
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		| ''Seasonal fractional integration with structural break. An application to the German GNP data'' | 
	
		| ( 2007, Vol. 3 No.32 ) | 
	
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		| This paper deals with the analysis of the German nominal GNP quarterly data (1973q1 – 1996q4) using a new approach based on seasonal fractional integration that allows us to incorporate a structural break that is endogenously determined by the model. The results show that the break occurs at 1990q2, the time of the German re-unification, and the order of integration is slightly above 1 before the break, and strictly smaller than 1 (though highly persistent) after the unification. | 
	
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		| Keywords: | 
	
		| JEL: C2 - Single Equation Models; Single Variables: General C5 - Econometric Modeling: General
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		| | Manuscript Received : Apr 23 2007 |  | Manuscript Accepted : Jul 24 2007 | 
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