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A test for rational bubbles in the NASDAQ stock index : a fractionally integrated approach
Cuñado Eizaguirre, Juncal, (2005)
Seasonal fractional integration in the Spanish tourism quarterly time series
Gil-Alaña, Luis A., (2004)
Is the US fiscal deficit sustainable? : A fractionally integrated approach
Cuñado Eizaguirre, Juncal, (2004)