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IEEE Transactions on Education > 2016 > 59 > 2 > 98 - 104
IEEE Transactions on Learning Technologies > 2010 > 3 > 1 > 18 - 23
IEEE Transactions on Learning Technologies > 2008 > 1 > 4 > 229 - 234
Computing in Science & Engineering > 2008 > 10 > 5 > 28 - 33