1. Milo and the magical stones (Max en de toverstenen). MediaMix Benelux (2002)
2. Rabbit, R.: Group 3: Fun in the Clouds (Robbie Konijn, Groep 3: Pret in de Wolken). Mindscape (2003)
3. Lecture Notes in Computer Science;W. Barendregt,2004
4. Barendregt, W., Bekker, M.M., Bouwhuis, D., Baauw, E.: Predicting effectiveness of children participants in user testing based on personality characteristics. Submitted to Behaviour & Information Technology (Unpublished manuscript)
5. Chattratichart, J., Brodie, J.: Applying User Testing Data to UEM Performance Metrics. In: Late Breaking Results Paper, Vienna, Austria, April 24, pp. 1119–1122 (2004)