Christidou, Maria; Panagiotidis, Theodore - 2010
the introduction of the single currency. Panel unit root (Pesaran, 2007) and stationarity tests (Hadri and Kurozumi, 2008 …) that take into account cross-sectional dependence are also estimated. The results remain inconclusive as panel stationarity … tests fail to support PPP whereas panel unit root tests fail to reject PPP for the whole sample and for the period before …