Columbia subject headings:
Harvard subject headings:
Councils and synods--Russia (Federation)--History--21st century.
Russia (Federation)--Church history--21st century.
Princeton subject headings:
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Government--Congresses.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Russia (Federation)--Congresses.