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IEEE Transactions on Learning Technologies > 2011 > 4 > 3 > 197 - 208
IEEE Transactions on Learning Technologies > 2009 > 2 > 4 > 275 - 288
IEEE Transactions on Learning Technologies > 2009 > 2 > 4 > 295 - 303
IEEE Transactions on Learning Technologies > 2011 > 4 > 3 > 197 - 208
IEEE Transactions on Learning Technologies > 2009 > 2 > 4 > 275 - 288
IEEE Transactions on Learning Technologies > 2009 > 2 > 4 > 295 - 303