Jelaskan Catatan dari Flaochad

Geary, Patrick J. Before France and Germany. Oxford University Press: 1988.

Wallace-Hadrill, J. M. The Long-Haired Kings and other Studies in Frankish History. Butler & Tanner Ltd: London, 1962.

Lewis, Archibald R. "The Dukes in the Regnum Francorum, A.D. 550-751. " Speculum, Vol. LI, No. 3. July, 1976. pp 381 – 410.