Columbia subject headings:
Harvard subject headings:
Balkan Peninsula--Economic conditions--21st century--Congresses.
European Union--Balkan Peninsula--Congresses.
Financial crises--Balkan Peninsula--Congresses.
Greece--Economic relations--Balkan Peninsula--Congresses.
Princeton subject headings:
Balkan Peninsula--Economic conditions--21st century--Congresses.
European Union--Balkan Peninsula--Congresses.
Financial crises--Balkan Peninsula--Congresses.
Greece--Economic relations--Congresses.