Columbia subject headings:
Debts, Public--European Union countries.
Euro.
Eurozone.
Monetary policy--European Union countries.
Money--European Union countries.
Harvard subject headings:
Debts, Public--European Union countries.
Eurozone.
Monetary policy--European Union countries.
Princeton subject headings:
Debt, public--European Union countries.
Euro.
Eurozone.
Global Financial Crisis, 2008-2009.
Monetary policy--European Union countries.