Green, Dennis H. "The Ludwigslied and the Battle of Saucourt", in Judith Jesch (ed.), The Scandinavians from the Vendel Period to the Tenth Century (Oxford: Boydell Press, 2002), 281–302.
Fouracre, Paul. "The Context of the Old High German Ludwigslied", Medium Aevum, 46 (1985), 87–103.
MacLean, Simon. Kingship and Politics in the Late Ninth Century: Charles the Fat and the end of the Carolingian Empire. Cambridge: Cambridge University Press, 2003.
McKitterick, Rosamond. The Frankish Kingdoms under the Carolingians, 751–987. London: Longman, 1983.
Oman, Charles. The Dark Ages 476–918. London: Rivingtons, 1914.
