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IEEE Transactions on Learning Technologies > 2015 > 8 > 1 > 18 - 30
IEEE Transactions on Computers > 2013 > 62 > 10 > 1988 - 2000
2011 Frontiers in Education Conference (FIE) > S1G-1 - S1G-6
2009 International Conference on CyberWorlds > 305 - 311