Gan, Li; Hsiao, Cheng; Xu, Shu - In: Journal of Econometrics 178 (2014) P1, pp. 80-85
Many macroeconomic and financial variables show highly persistent and correlated patterns but are not necessarily cointegrated. Recently, Sun et al. (2011) propose using a semiparametric varying coefficient approach to capture correlations between integrated but non cointegrated variables....