Bernard Bachrach og David Bachrach. «The Saxon Military Revolution, 912–973: Myth and Reality». 15 (2007), 186–222. Bernard Bachrach og David Bachrach. «Early Saxon Frontier Warfare: Henry I, Otto I, and Carolingian Military Institutions». 10 (2012), 17–60. David Bachrach. «Exercise of Royal Power in Early Medieval Europe: The Case of Otto the Great, 936–973». 17 (2009), 389–419. David Bachrach. «The Written Word in Carolingian-Style Fiscal Administration under King Henry I, 919–936». 28:4 (2010), 399–423. John W. Bernhardt. . Cambridge Studies in Medieval Life and Thought, 21. Cambridge: Cambridge University Press, 1993. Jim Bradbury. . London: Hambledon Continuum, 2007. Eric J. Goldberg. «'More Devoted to the Equipment of Battle Than the Splendor of Banquets': Frontier Kingship, Military Ritual, and Early Knighthood at the Court of Louis the German». 30 (1999), 41–78. Timothy Reuter. «The Medieval German ? The Empire and its Rulers in the Highe Middle Ages». I , ed. Anne J. Duggan (London: 1993), 179–211. Susan Reynolds. . Oxford: Clarendon, 1997. Walter Ullmann. . London: Methuen, 1969.