Columbia subject headings:
Art, Russian.
Art--Attribution.
Art--Expertising.
Gosudarstvennai︠a︡ Tretʹi︠a︡kovskai︠a︡ galerei︠a︡.
Harvard subject headings:
Art, Russian.
Art--Attribution.
Art--Expertising
Gosudarstvennai︠a︡ Tretʹi︠a︡kovskai︠a︡ galerei︠a︡
Princeton subject headings: