J.L.Nelson, “Charlemagne the Man”, в книге: J.Story (ed.), Charlemagne: Empire and Society (Manchester, 2005), 22–37, на с. 24–25; on the estates of S.Germain, C.Wickham, Framing the Early Middle Ages: Europe and the Mediterranean 400–800 (Oxford, 2005), 399–402, 404–406.
