Bibliografie
The Peace of God, the 'weakness' of Robert the Pious and the struggle for the German throne. 1023-1025. Early Medieval Europe. 2010;18(2):202-222. .
Bishop Gerard I of Cambrai-Arras, the Three Orders, and the Problem of Human Weakness. In: . The Bishop Reformed. Studies of Episcopal Power and Culture in the Central Middle Ages. Aldershot: Routledge; 2007. .
Episcopal Historiography as Archive. Some Reflections on the Autograph of the Gesta Episcoporum Cameracensium (Ms Den Haag KB 75 F 15). Jaarboek voor Middeleeuwse Geschiedenis. 2007;10:7-46. .