M. Beranuy, U. Oberst, X. Carbonell, und A. Chamarro. Computers in Human Behavior, 25 (5):
1182 - 1187(2009)Including the Special Issue: Design Patterns for Augmenting E-Learning Experiences.
D. Simons, D. Hannula, D. Warren, und S. Day. The Cambridge Handbook of Consciousness, Cambridge University Press, The Edinburgh Building, Cambridge CB2 8RU, UK, (2007)