Bibliografie
The Migration of Ideas in the Early Middle Ages: Ways and Means. In: . Foundations of Learning: The Transfer of Encyclopaedic Knowledge in the Early Middle Ages. Leuven: Peeters; 2007. pp. 1-18. .
The Anglo-Saxon Continental Mission and the Transfer of Encyclopaedic Knowledge. In: . Foundations of Learning: The Transfer of Encyclopaedic Knowledge in the Early Middle Ages. Leuven: Peeters; 2007. pp. 19-50. .
Heerschappij en ontginning in Woudenberg in de middeleeuwen. Jaarboek Oud-Utrecht. 2003;Jaarboek 2003:123-166. .