Columbia subject headings:
Byzantine Empire--Relations--Russia.
Russia--Relations--Byzantine Empire.
Harvard subject headings:
Byzantine Empire--Relations--Russia.
Maximus, the Greek, Saint, 1480-1556.
Russia--Church history.
Russia--Civilization--Byzantine influences.
Russia--Relations--Byzantine Empire.
Princeton subject headings:
Byzantine Empire--Civilization.
Byzantine empire--Relations--Kievan Rus.
Kievan Rus--Civilization--Byzantine influences.
Kievan Rus--Relations--Byzantine empire.