1. Meyers, C., Jones, T.B.: Promoting Active Learning: Strategies for the College Classroom. Jossey-Bass Inc., San Francisco (1993)
2. Silberman, M.: Active Learning: 101 Strategies To Teach Any Subject. Prentice-Hall, Des Moines (1996)
3. Nichols, M., Cator, K.: Challenge Based Learning. White Paper. Apple Inc, Cupertino (2008)
4. Nichols, M., Cator, K., Torres, M.: Challenge Based Learners User Guide. Digital Promise, Redwood City (2016)
5. Giorgio, T.D., Brophy, S.P.: Challenge based learning in biomedical engineering: a legacy cycle for biotechnology. In: Proceedings of the ASEE, pp. 2701 a 2711. (2001)