Magdalino, The Empire ofManuelI Komnenos, 74 J. Phillips, The Fourth Crusade and the Sack ofConstantinople, 158 William of Tyre, A History of Deeds Done Beyond
Byzantium (Aldershot, 1991). The Empire ofManuelI Komnenos, 1143-1180 (Cambridge, 1993), pp.xxvi+527 Constantinople médiévale. Études sur l'évolution des
Development of the Komnenian Army 1081–1180 Magdalino, Paul, The empire ofManuelI Komnenos 1143–1180 Norwich, John Julius. A Short History of Byzantium