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K. Friston, J. Kilner, and L. Harrison. Journal of Physiology-Paris, 100 (1-3):
70--87(2006)Theoretical and Computational Neuroscience: Understanding Brain Functions.
J. Najjar, S. Ternier, and E. Duval. Proceedings of the ED-MEDIA 2004 World Conference on Educational Multimedia, Hypermedia and Telecommunications, (June 2004)
C. Hmelo-Silver, R. Duncan, and C. Chinn. Educational Psychologist, 42 (2):
99--107(2007)http://www.cogtech.usc.edu/publications/hmelo_ep07.pdf
-- last visited $14^th$ March 2008.