1. Bernd Krieg-Brückner, Dieter Hutter, Arne Lindow et al. MultiMedia instruction in safe and secure systems. Recent Trends in Algebraic Development Techniques, LNCS 2755, 2003, pp.82–117.
2. Bernd Krieg-Brückner, Arne Lindow, Christoph Lüth et al. Semantic interrelation of documents via an ontology. In Proc. the 2nd E-Learning Workshop Computer Science, Engels G, Seehusen S (eds.), Paderborn, Germany, Springer-Verlag, 2004, pp.271–282.
3. Ozsoyoglu G, Balkir N H, Ozsoyoglu Z M et al. On automated lesson construction from electronic textbooks. IEEE Trans. Knowledge and Data Engineering, 2004, 16(3): 130–140.
4. Peter Brusilovsky. Adaptive and intelligent technologies for web-based education. KI—Künstliche Intelligenz, 1999, 13(4): 19–25.
5. David Stotts P, Richard Furuta, Cyrano Ruiz Cabarrus. Hyperdocuments as automata: Verification of trace-based browsing properties by model checking. Information Systems, 1998, 16(1): 1–30.