1. Cover, T.M., Thomas, J.A.: Elements of information theory, 2nd edn. Wiley-Interscience, New York (2006)
2. Bell, T., Fellows, M., Witten, I.: Computer Science Unplugged... Off-line activities and games for all ages (1998), http://csunplugged.com/
3. Van Emde Boas, P.: Games in the Classroom. In: OOPSLA 1999 workshop (1999)
4. Federation of American Scientists: Harnessing the power of video games for learning. Summit on Educational Games (2006)
5. Ginat, D.: Elaborating heuristic reasoning and rigor with mathematical games. SIGCSE Bull. 39, 32–36 (2007)