Pesaran, M. Hashem; Smith, L. Vanessa; Yamagata, Takashi - 2021
This paper extends the cross sectionally augmented panel unit root test proposed by Pesaran (2007) to the case of a … the maximum number of factors, in contrast to other panel unit root tests based on principal components that require in … addition the estimation of the number of factors as well as the factors themselves. Small sample properties of the proposed …