«The Vision of Charlemagne», in Carolingian Civilization: A Reader, ed. Paul Edward Dutton, 2nd ed. (Toronto: University of Toronto Press, 2004), 456–457.
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Bernard Bachrach, «The Practical Use of Vegetius’ ‘De Re Militari’ During the Early Middle Ages», Historian 47, no. 2 (1985): 239–255; Bernard Bachrach, Early Carolingian Warfare: Prelude to Empire (Philadelphia: University of Pennsylvania Press, 2001).
