“…A wide range of indicators has been applied in the scientific literature to substantiate real and nominal convergence in the European Union. In particular, gross domestic product per capita and price levels are indicators often used to assess convergence or divergence in the European Union (for example Matkowski and Próchniak, 2004, Žďárek, 2011and Dobrinski and Havlik, 2014. Other authors use different indicators to verify convergence in the EU, for example unemployment, productivity or unit labour cost (Estrada, et al, 2012, Sondermann, 2012and Bourgeot, 2013.…”