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IEEE Transactions on Education > 2014 > 57 > 4 > 242 - 247
MSIE 2011 > 1122 - 1125
IEEE Transactions on Education > 2011 > 54 > 1 > 156 - 163
IEEE Transactions on Education > 2014 > 57 > 4 > 242 - 247
MSIE 2011 > 1122 - 1125
IEEE Transactions on Education > 2011 > 54 > 1 > 156 - 163