Columbia subject headings:
Art, Byzantine--Congresses.
Art, Byzantine--Influence--Congresses.
Byzantine Empire--Civilization--Congresses.
Harvard subject headings:
Art, Byzantine--Congresses.
Art, Byzantine--Influence--Congresses.
Art, Ottonian--Congresses.
Theophano, Empress, consort of Otto II, Holy Roman Emperor, 958-991--Art patronage--Congresses.
Theophano, Empress, consort of Otto II, Holy Roman Emperor, 958-991--Congresses.
Princeton subject headings:
Art, Byzantine--Congresses.
Art, Byzantine--Influence--Congresses.
Byzantine Empire--Civilization--Congresses.