Books.
- Virtual Colonoscopy – A practical guide. Ph. Lefere and S. Gryspeerdt Ed., Springer 2005, Diagnostic Imaging Series (A.L. Baert, K. Sartor).
- Chapter 7 in Radiology and Imaging of the Colon. A. Chapman Ed., Springer 2004: 71-80.(Diagnostic Imaging, A.L. Baert, K. Sartor): .P. Lefere and Stefaan Gryspeerdt. Dietary faecal tagging.