Bescherer, C., Herding D., Kortenkamp U., Müller W., & Zimmermann M.  (2012).  E-learning Tools with Intelligent Assessment and Feedback.  (Graf, S., Lin F., Kinshuk, & McGreal R., Ed.).Intelligent and Adaptive Learning Systems: Technology Enhanced Support for Learners and Teachers.  

Müller, W., & Kortenkamp U.  (2010).  Learning Programming with Ruby.  Proceedings of the IFIP Workshop "New developments in ICT and Informatics education''.  

Kortenkamp, U., & Müller W.  (2008).  Wo ist denn hier das Undo?.  Online Tutoring Journal. 3, 

Müller, W., Bescherer C., Kortenkamp U., & Spannagel C.  (2006).  Intelligent Computer-aided Assessment in the Math Classroom: State-of-the-art and Perspectives.  Proceedings of the IFIP WG 3.1, 3.3, & 3.5 Joint Conference Imagining the future for ICT and Education, Alesund, Norway.