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