The interaction between and the roles of Upper and Lower Egypt in the formation of the Egyptian state. Another review, in: Midant-Reynes, Béatrix; Tristant, Yann (eds), Egypt at its origins 2: proceedings of the International Conference "Origin of the State. Predynastic and Early Dynastic Egypt", Toulouse (France), 5th–8th September 2005. Orientalia Lovaniensia Analecta 172. Leuven
Köhler, E. Christiana. 2008
