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IEEE Transactions on Learning Technologies > 2012 > 5 > 1 > 2 - 10
2010 2nd International Conference on Education Technology and Computer > 2 > V2-173 - V2-176
2010 2nd International Conference on Education Technology and Computer > 4 > V4-493 - V4-495
2009 2nd Conference on Human System Interactions > 170 - 176
IEEE Computer Graphics and Applications > 2008 > 28 > 3 > 99 - 103