1. Reiser, B.J., Tabak, I., Sandoval, W.A., Smith, B., Steinmuller, F., Leone, T.J.: BGuILE: Stategic and Conceptual Scaffolds for Scientific Inquiry in Biology Classrooms. In: Carver, S.M., Klahr, D. (eds.) Cognition and Instruction: Twenty five years of progress. Erlbaum, Mahwah (2001)
2. Linn, M.C.: Designing the knowledge integration environment. International Journal of Science Education 8(22), 781–796 (2000)
3. Shimoda, T.A., White, B.Y., Frederiksen, J.R.: Learner goal orientation in learning inquiry skills with modifiable software advisors. Science Education 86, 244–263 (2002)
4. Aleven, V., Roll, I., McLaren, B., Ryu, E.J., Koedinger, K.: An architecture to combine meta-cognitive and cognitive tutoring: Pilot testing the Help Tutor. In: AIED 2005, Netherlands (2005)
5. Lecture Notes in Computer Science;A. Bunt,2004