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IEEE Transactions on Education > 2011 > 54 > 1 > 87 - 96
2010 International Conference on Educational and Information Technology > 1 > V1-209 - V1-212
2010 2nd International Conference on Education Technology and Computer > 2 > V2-541 - V2-545
IEEE EDUCON 2010 Conference > 701 - 708
IEEE EDUCON 2010 Conference > 523 - 530