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IEEE Latin America Transactions > 2015 > 13 > 4 > 1061 - 1067
IEEE Transactions on Learning Technologies > 2013 > 6 > 1 > 38 - 45
IEEE Latin America Transactions > 2015 > 13 > 4 > 1061 - 1067
IEEE Transactions on Learning Technologies > 2013 > 6 > 1 > 38 - 45