Costantini, Mauro; Lupi, Claudio - Dipartimento di Economia, Gestione, Società e … - 2011
In this paper we propose a simple extension to the panel case of the covariate- augmented Dickey Fuller (CADF) test for unit roots developed in Hansen (1995). The extension we propose is based on a p values combination approach that takes into account cross-section dependence. We show that the...