Hussey, J. M. (ed.) "The Cambridge Medieval History, Volume IV: The Byzantine Empire". Part I, "Byzantium and its Neighbours", Part II, "Government, Church and Civilization" (Book Review)
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Slavonic and East European Review, 1968, Vol.46 (107), p.515 [Periódico revisado por pares]London, etc: Eyre and Spottiswoode Ltd
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