1. Bailey, R.W., Allan, R.W., Raiello, P.: Usability Testing vs. Heuristic Evaluation: A Head-to-Head Comparison. In: Proc. Human Factors Society 36th Annual Meeting, pp. 409–413 (1992)
2. Bevan, N., Singhal, N., Werner, B., Degler, D., Wilson, C.: Formative Evaluation. Usability Body of Knowledge,
http://www.usabilitybok.org/methods/formative-evaluation
3. Capra, M.G.: Comparing Usability Problem Identification and Description by Prac-titioners and Students. In: Proceedings of the Human Factors and Ergonomics Society 51st Annual Meeting, pp. 474–478. HFES, Santa Monica (2007)
4. Dewey, J.: Democracy and Education: an introduction to the philosophy of education (1916),
http://en.wikisource.org/wiki/Democracy_and_Education
5. Dumas, J., Molich, R., Jefferies, R.: Describing Usability Problems: Are we sending the right message? Interactions 4, 24–29 (2004)