Volume 50, Issue 3, August 2017rnSpecial Issue on Debt, taxation, economic activity and financial variablesrnISSN: 1573-9414 (Print) 1574-0277 (Online) rnhttps://link.springer.com/journal/10644/50/3/page/1rn1 Editorial of the special issue on debt, taxation, economic activity and financial variables Georgios P. Kouretasrn189-191rn2 Impacts of realized volatility of oil price over foreign trade related activities in Turkey Suleyman Degirmenrn193-209rn3 The dynamic evolution of the Greek regional net fixed capital time series Kyriakos Emmanouilidisrn211-238rn4 Eurozone debt crisis and bond yields convergence: evidence from the new EU countries Minoas Koukouritakisrn239-258rn5 The return of financial variables in forecasting GDP growth in the G-7 Petri Kuosmanenrn259-277rn6 Recurrent default or policy-optimal taxation Mark A. Robertsrn279-297rn